diff --git a/include/dali_comm.hpp b/include/dali_comm.hpp
index 8b7c256..e1c5274 100644
--- a/include/dali_comm.hpp
+++ b/include/dali_comm.hpp
@@ -9,7 +9,7 @@
 // Lightweight communicator for DALI gateway type 1 (USB UART new frame format).
 // Frames:
 //  - Send:   [0x10, addr, cmd]
-//  - Ext:    [0x11, addr, cmd] (sent twice with a small delay)
+//  - Ext:    [0x11, addr, cmd] (one logical send; gateway/transceiver handles any required repeat timing)
 //  - Query:  [0x12, addr, cmd] -> expects [0xFF, data] on success
 //              COMPARE may also return [0xFD, data] when multiple devices reply together
 // Callers provide UART callbacks; this class only builds frames and parses basic responses.
@@ -49,7 +49,7 @@ class DaliComm {
 
   // Send standard command frame (0x10).
   bool sendCmd(uint8_t addr, uint8_t cmd) const;
-  // Send extended command frame (0x11).
+  // Send one logical extended command frame (0x11).
   bool sendExtCmd(uint8_t addr, uint8_t cmd) const;
   // Send query frame (0x12) and parse single-byte response. Returns nullopt on no/invalid response,
   // except COMPARE where 0xFD collisions are treated as a positive match.
diff --git a/include/dt5.hpp b/include/dt5.hpp
index 74445b9..c5ad73d 100644
--- a/include/dt5.hpp
+++ b/include/dt5.hpp
@@ -73,6 +73,6 @@ class DaliDT5 {
 
   bool enable();
   static int addrOf(int a);
-  bool send(int a, int code, bool twice = false);
+  bool send(int a, int code);
   std::optional<int> query(int a, int code);
 };
\ No newline at end of file
diff --git a/include/dt6.hpp b/include/dt6.hpp
index adf1d49..880be3a 100644
--- a/include/dt6.hpp
+++ b/include/dt6.hpp
@@ -124,7 +124,7 @@ class DaliDT6 {
 
   bool enable();
   static int addrOf(int a);
-  bool send(int a, int code, bool twice = false);
+  bool send(int a, int code);
   std::optional<int> query(int a, int code);
   std::optional<bool> queryYesNo(int a, int code);
 };
\ No newline at end of file
diff --git a/include/dt8.hpp b/include/dt8.hpp
index cd33d02..376c50e 100644
--- a/include/dt8.hpp
+++ b/include/dt8.hpp
@@ -25,6 +25,20 @@ class ColorStatus {
   int status_ = 0;
 };
 
+class ColorType {
+ public:
+  explicit ColorType(int type) : type_(type) {}
+
+  int raw() const { return type_; }
+  bool xy() const { return (type_ & 0x10) != 0; }
+  bool ct() const { return (type_ & 0x20) != 0; }
+  bool primaryN() const { return (type_ & 0x40) != 0; }
+  bool rgbWaf() const { return (type_ & 0x80) != 0; }
+
+ private:
+  int type_ = 0;
+};
+
 class ColorTypeFeature {
  public:
   explicit ColorTypeFeature(int features) : features_(features) {}
@@ -41,6 +55,17 @@ class ColorTypeFeature {
   int features_ = 0;
 };
 
+struct SceneColorReport {
+  int brightness = 0;
+  int colorTypeValue = 0;
+  std::vector<double> xy;
+  std::optional<int> colorTemperature;
+
+  ColorType colorType() const { return ColorType(colorTypeValue); }
+  bool hasXy() const { return xy.size() == 2; }
+  bool hasColorTemperature() const { return colorTemperature.has_value(); }
+};
+
 class DaliDT8 {
  public:
   explicit DaliDT8(DaliBase& base);
@@ -135,6 +160,7 @@ class DaliDT8 {
   std::optional<int> getPrimaryYRaw(int a, int n);
   std::optional<int> getPrimaryTy(int a, int n);
 
+  std::optional<SceneColorReport> getSceneColorReport(int a, int sense);
   std::vector<double> getSceneColor(int a, int sense);
 
   // Store / config
diff --git a/src/base.cpp b/src/base.cpp
index fb25091..6cfcbf0 100644
--- a/src/base.cpp
+++ b/src/base.cpp
@@ -266,19 +266,21 @@ std::optional<int> DaliBase::getGradualChangeSpeed(int a) {
 
 bool DaliBase::setPowerOnLevel(int a, int value) { return setDTR(value) && storeDTRAsPoweredBright(a); }
 
-std::optional<int> DaliBase::getPowerOnLevel(int a) { return query(a, DALI_CMD_QUERY_MAX_LEVEL); }
+std::optional<int> DaliBase::getPowerOnLevel(int a) { return query(a, DALI_CMD_QUERY_POWER_ON_LEVEL); }
 
 bool DaliBase::setSystemFailureLevel(int a, int value) { return setDTR(value) && storeDTRAsSystemFailureLevel(a); }
 
-std::optional<int> DaliBase::getSystemFailureLevel(int a) { return query(a, DALI_CMD_QUERY_MIN_LEVEL); }
+std::optional<int> DaliBase::getSystemFailureLevel(int a) {
+  return query(a, DALI_CMD_QUERY_SYSTEM_FAILURE_LEVEL);
+}
 
 bool DaliBase::setMinLevel(int a, int value) { return setDTR(value) && storeDTRAsMinLevel(a); }
 
-std::optional<int> DaliBase::getMinLevel(int a) { return query(a, DALI_CMD_QUERY_POWER_ON_LEVEL); }
+std::optional<int> DaliBase::getMinLevel(int a) { return query(a, DALI_CMD_QUERY_MIN_LEVEL); }
 
 bool DaliBase::setMaxLevel(int a, int value) { return setDTR(value) && storeDTRAsMaxLevel(a); }
 
-std::optional<int> DaliBase::getMaxLevel(int a) { return query(a, DALI_CMD_QUERY_SYSTEM_FAILURE_LEVEL); }
+std::optional<int> DaliBase::getMaxLevel(int a) { return query(a, DALI_CMD_QUERY_MAX_LEVEL); }
 
 bool DaliBase::setFadeTime(int a, int value) {
   int v = value;
diff --git a/src/dali_comm.cpp b/src/dali_comm.cpp
index a703fad..fe8382f 100644
--- a/src/dali_comm.cpp
+++ b/src/dali_comm.cpp
@@ -201,6 +201,7 @@ bool DaliComm::sendCmd(uint8_t addr, uint8_t cmd) const {
   return writeFrame(frame);
 }
 
+// Send extended command frame (0x11). Gateway will send twice for 0x11, but we only need to send once.
 bool DaliComm::sendExtCmd(uint8_t addr, uint8_t cmd) const {
   const std::vector<uint8_t> frame{0x11, addr, cmd};
   const bool ret = writeFrame(frame);
diff --git a/src/dt4.cpp b/src/dt4.cpp
index ad6745a..565c978 100644
--- a/src/dt4.cpp
+++ b/src/dt4.cpp
@@ -3,6 +3,7 @@
 #include "dali_define.hpp"
 
 #include <algorithm>
+#include <optional>
 
 DaliDT4::DaliDT4(DaliBase& base) : base_(base) {}
 
@@ -24,14 +25,12 @@ std::optional<bool> DaliDT4::queryYesNo(int a, int code) {
 bool DaliDT4::enableDT4() { return enable(); }
 
 bool DaliDT4::referenceSystemPower(int a) {
-  return enable() && base_.sendExtCmd(addrOf(a), DALI_CMD_DT4_REFERENCE_SYSTEM_POWER) &&
-         base_.sendExtCmd(addrOf(a), DALI_CMD_DT4_REFERENCE_SYSTEM_POWER);
+  return enable() && base_.sendExtCmd(addrOf(a), DALI_CMD_DT4_REFERENCE_SYSTEM_POWER);
 }
 
 bool DaliDT4::selectDimmingCurve(int a, int curve) {
   const int value = std::clamp(curve, 0, 255);
-  return enable() && base_.setDTR(value) &&
-         base_.sendExtCmd(addrOf(a), DALI_CMD_DT4_SELECT_DIMMING_CURVE) &&
+  return base_.setDTR(value) && enable() &&
          base_.sendExtCmd(addrOf(a), DALI_CMD_DT4_SELECT_DIMMING_CURVE);
 }
 
diff --git a/src/dt5.cpp b/src/dt5.cpp
index 74b689e..ce32171 100644
--- a/src/dt5.cpp
+++ b/src/dt5.cpp
@@ -3,6 +3,7 @@
 #include "dali_define.hpp"
 
 #include <algorithm>
+#include <optional>
 
 DaliDT5::DaliDT5(DaliBase& base) : base_(base) {}
 
@@ -10,10 +11,9 @@ bool DaliDT5::enable() { return base_.dtSelect(5); }
 
 int DaliDT5::addrOf(int a) { return a * 2 + 1; }
 
-bool DaliDT5::send(int a, int code, bool twice) {
+bool DaliDT5::send(int a, int code) {
   if (!enable()) return false;
   if (!base_.sendExtCmd(addrOf(a), code)) return false;
-  if (twice && !base_.sendExtCmd(addrOf(a), code)) return false;
   return true;
 }
 
@@ -25,37 +25,35 @@ std::optional<int> DaliDT5::query(int a, int code) {
 bool DaliDT5::enableDT5() { return enable(); }
 
 bool DaliDT5::setOutputRange1To10V(int a) {
-  return send(a, DALI_CMD_DT5_SET_OUTPUT_RANGE_1_TO_10V, true);
+  return send(a, DALI_CMD_DT5_SET_OUTPUT_RANGE_1_TO_10V);
 }
 
 bool DaliDT5::setOutputRange0To10V(int a) {
-  return send(a, DALI_CMD_DT5_SET_OUTPUT_RANGE_0_TO_10V, true);
+  return send(a, DALI_CMD_DT5_SET_OUTPUT_RANGE_0_TO_10V);
 }
 
 bool DaliDT5::switchOnInternalPullUp(int a) {
-  return send(a, DALI_CMD_DT5_SWITCH_ON_INTERNAL_PULL_UP, true);
+  return send(a, DALI_CMD_DT5_SWITCH_ON_INTERNAL_PULL_UP);
 }
 
 bool DaliDT5::switchOffInternalPullUp(int a) {
-  return send(a, DALI_CMD_DT5_SWITCH_OFF_INTERNAL_PULL_UP, true);
+  return send(a, DALI_CMD_DT5_SWITCH_OFF_INTERNAL_PULL_UP);
 }
 
 bool DaliDT5::storePhysicalMinimum(int a, int level) {
   const int value = std::clamp(level, 0, 254);
   return enable() && base_.setDTR(value) &&
-         base_.sendExtCmd(addrOf(a), DALI_CMD_DT5_STORE_DTR_AS_PHYSICAL_MINIMUM) &&
-         base_.sendExtCmd(addrOf(a), DALI_CMD_DT5_STORE_DTR_AS_PHYSICAL_MINIMUM);
+    base_.sendExtCmd(addrOf(a), DALI_CMD_DT5_STORE_DTR_AS_PHYSICAL_MINIMUM);
 }
 
 bool DaliDT5::selectDimmingCurve(int a, int curve) {
   const int value = std::clamp(curve, 0, 255);
-  return enable() && base_.setDTR(value) &&
-         base_.sendExtCmd(addrOf(a), DALI_CMD_DT5_SELECT_DIMMING_CURVE) &&
-         base_.sendExtCmd(addrOf(a), DALI_CMD_DT5_SELECT_DIMMING_CURVE);
+  return base_.setDTR(value) && enable() &&
+    base_.sendExtCmd(addrOf(a), DALI_CMD_DT5_SELECT_DIMMING_CURVE);
 }
 
 bool DaliDT5::resetConverterSettings(int a) {
-  return send(a, DALI_CMD_DT5_RESET_CONVERTER_SETTINGS, true);
+  return send(a, DALI_CMD_DT5_RESET_CONVERTER_SETTINGS);
 }
 
 std::optional<int> DaliDT5::getDimmingCurve(int a) { return query(a, DALI_CMD_DT5_QUERY_DIMMING_CURVE); }
diff --git a/src/dt6.cpp b/src/dt6.cpp
index df1f527..ac881ca 100644
--- a/src/dt6.cpp
+++ b/src/dt6.cpp
@@ -10,10 +10,9 @@ bool DaliDT6::enable() { return base_.dtSelect(6); }
 
 int DaliDT6::addrOf(int a) { return a * 2 + 1; }
 
-bool DaliDT6::send(int a, int code, bool twice) {
+bool DaliDT6::send(int a, int code) {
   if (!enable()) return false;
   if (!base_.sendExtCmd(addrOf(a), code)) return false;
-  if (twice && !base_.sendExtCmd(addrOf(a), code)) return false;
   return true;
 }
 
@@ -31,29 +30,27 @@ std::optional<bool> DaliDT6::queryYesNo(int a, int code) {
 bool DaliDT6::enableDT6() { return enable(); }
 
 bool DaliDT6::referenceSystemPower(int a) {
-  return send(a, DALI_CMD_DT6_REFERENCE_SYSTEM_POWER, true);
+  return send(a, DALI_CMD_DT6_REFERENCE_SYSTEM_POWER);
 }
 
 bool DaliDT6::enableCurrentProtector(int a) {
-  return send(a, DALI_CMD_DT6_ENABLE_CURRENT_PROTECTOR, true);
+  return send(a, DALI_CMD_DT6_ENABLE_CURRENT_PROTECTOR);
 }
 
 bool DaliDT6::disableCurrentProtector(int a) {
-  return send(a, DALI_CMD_DT6_DISABLE_CURRENT_PROTECTOR, true);
+  return send(a, DALI_CMD_DT6_DISABLE_CURRENT_PROTECTOR);
 }
 
 bool DaliDT6::selectDimmingCurve(int a, int curve) {
   const int value = std::clamp(curve, 0, 255);
-  return enable() && base_.setDTR(value) &&
-         base_.sendExtCmd(addrOf(a), DALI_CMD_DT6_SELECT_DIMMING_CURVE) &&
-         base_.sendExtCmd(addrOf(a), DALI_CMD_DT6_SELECT_DIMMING_CURVE);
+  return base_.setDTR(value) && enable() &&
+    base_.sendExtCmd(addrOf(a), DALI_CMD_DT6_SELECT_DIMMING_CURVE);
 }
 
 bool DaliDT6::storeFastFadeTime(int a, int value) {
   const int clamped = std::clamp(value, 0, 27);
   return enable() && base_.setDTR(clamped) &&
-         base_.sendExtCmd(addrOf(a), DALI_CMD_DT6_STORE_DTR_AS_FAST_FADE_TIME) &&
-         base_.sendExtCmd(addrOf(a), DALI_CMD_DT6_STORE_DTR_AS_FAST_FADE_TIME);
+    base_.sendExtCmd(addrOf(a), DALI_CMD_DT6_STORE_DTR_AS_FAST_FADE_TIME);
 }
 
 std::optional<DaliDT6GearType> DaliDT6::getGearType(int a) {
diff --git a/src/dt8.cpp b/src/dt8.cpp
index eb4999c..cf03707 100644
--- a/src/dt8.cpp
+++ b/src/dt8.cpp
@@ -381,11 +381,34 @@ std::optional<int> DaliDT8::getPrimaryTy(int a, int n) {
   return getColourRaw(a, 66 + 3 * n);
 }
 
+std::optional<SceneColorReport> DaliDT8::getSceneColorReport(int a, int sense) {
+  const auto brightness = base_.getScene(a, sense);
+  if (!brightness.has_value() || brightness.value() == 255) return std::nullopt;
+
+  const int colorTypeValue = getReportColourType(a).value_or(0);
+  const ColorType colorType(colorTypeValue);
+
+  SceneColorReport report;
+  report.brightness = brightness.value();
+  report.colorTypeValue = colorTypeValue;
+
+  if (colorType.xy()) {
+    report.xy = getReportColour(a);
+    return report;
+  }
+
+  if (colorType.ct()) {
+    report.colorTemperature = getReportColorTemperature(a);
+    return report;
+  }
+
+  return report;
+}
+
 std::vector<double> DaliDT8::getSceneColor(int a, int sense) {
-  const auto bright = base_.getScene(a, sense);
-  if (!bright.has_value() || bright.value() == 255) return {};
-  base_.copyReportColourToTemp(a);
-  return getColour(a);
+  const auto report = getSceneColorReport(a, sense);
+  if (!report.has_value() || !report->colorType().xy() || !report->hasXy()) return {};
+  return report->xy;
 }
 
 bool DaliDT8::storePrimaryTy(int a, int n, int ty) {