diff --git a/CHANGELOG.md b/CHANGELOG.md
index 58d85ccd..f94066d3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,11 @@ change warranting a new major release:
 
 # [unreleased]
 
+## Changed
+
+- Remove 2 TCS threads.
+- Move low level polling into ACS PST, move high level device handlers into TCS system task.
+
 # [v1.27.1] 2023-02-13
 
 ## Fixed
diff --git a/bsp_q7s/core/scheduling.cpp b/bsp_q7s/core/scheduling.cpp
index cc3108e8..2aad7a23 100644
--- a/bsp_q7s/core/scheduling.cpp
+++ b/bsp_q7s/core/scheduling.cpp
@@ -214,21 +214,9 @@ void scheduling::initTasks() {
   }
 #endif
 
-#if OBSW_ADD_RTD_DEVICES == 1
-  PeriodicTaskIF* tcsPollingTask = factory->createPeriodicTask(
-      "TCS_POLLING_TASK", 75, PeriodicTaskIF::MINIMUM_STACK_SIZE * 2, 0.5, missedDeadlineFunc);
-  result = tcsPollingTask->addComponent(objects::SPI_RTD_COM_IF);
-  if (result != returnvalue::OK) {
-    scheduling::printAddObjectError("SPI_RTD_POLLING", objects::SPI_RTD_COM_IF);
-  }
-
-  PeriodicTaskIF* tcsTask = factory->createPeriodicTask(
-      "TCS_TASK", 55, PeriodicTaskIF::MINIMUM_STACK_SIZE, 0.8, missedDeadlineFunc);
-  scheduling::scheduleRtdSensors(tcsTask);
-#endif
-
   PeriodicTaskIF* tcsSystemTask = factory->createPeriodicTask(
-      "TCS_TASK", 45, PeriodicTaskIF::MINIMUM_STACK_SIZE, 0.5, missedDeadlineFunc);
+      "TCS_TASK", 55, PeriodicTaskIF::MINIMUM_STACK_SIZE, 0.5, missedDeadlineFunc);
+  scheduling::scheduleRtdSensors(tcsSystemTask);
   result = tcsSystemTask->addComponent(objects::TCS_SUBSYSTEM);
   if (result != returnvalue::OK) {
     scheduling::printAddObjectError("TCS_SUBSYSTEM", objects::TCS_SUBSYSTEM);
@@ -364,10 +352,6 @@ void scheduling::initTasks() {
   gpsTask->startTask();
 #endif
   acsSysTask->startTask();
-#if OBSW_ADD_RTD_DEVICES == 1
-  tcsPollingTask->startTask();
-  tcsTask->startTask();
-#endif /* OBSW_ADD_RTD_DEVICES == 1 */
   if (not tcsSystemTask->isEmpty()) {
     tcsSystemTask->startTask();
   }
@@ -394,7 +378,7 @@ void scheduling::createPstTasks(TaskFactory& factory, TaskDeadlineMissedFunction
 #endif
   FixedTimeslotTaskIF* acsPst = factory.createFixedTimeslotTask(
       "ACS_PST", 85, PeriodicTaskIF::MINIMUM_STACK_SIZE * 2, acsPstPeriod, missedDeadlineFunc);
-  result = pst::pstAcs(acsPst, cfg);
+  result = pst::pstTcsAndAcs(acsPst, cfg);
   if (result != returnvalue::OK) {
     if (result == FixedTimeslotTaskIF::SLOT_LIST_EMPTY) {
       sif::warning << "scheduling::initTasks: ACS PST is empty" << std::endl;
diff --git a/linux/fsfwconfig/pollingsequence/pollingSequenceFactory.cpp b/linux/fsfwconfig/pollingsequence/pollingSequenceFactory.cpp
index f9b69e45..63b40df2 100644
--- a/linux/fsfwconfig/pollingsequence/pollingSequenceFactory.cpp
+++ b/linux/fsfwconfig/pollingsequence/pollingSequenceFactory.cpp
@@ -184,7 +184,7 @@ ReturnValue_t pst::pstTest(FixedTimeslotTaskIF *thisSequence) {
   return returnvalue::OK;
 }
 
-ReturnValue_t pst::pstAcs(FixedTimeslotTaskIF *thisSequence, AcsPstCfg cfg) {
+ReturnValue_t pst::pstTcsAndAcs(FixedTimeslotTaskIF *thisSequence, AcsPstCfg cfg) {
   /* Length of a communication cycle */
   uint32_t length = thisSequence->getPeriodMs();
   bool enableAside = true;
@@ -684,5 +684,6 @@ ReturnValue_t pst::pstAcs(FixedTimeslotTaskIF *thisSequence, AcsPstCfg cfg) {
     thisSequence->addSlot(objects::RW4, length * config::acs::SCHED_BLOCK_2_PERIOD,
                           DeviceHandlerIF::GET_READ);
   }
+  thisSequence->addSlot(objects::SPI_RTD_COM_IF, length * 0.5, 0);
   return returnvalue::OK;
 }
diff --git a/linux/fsfwconfig/pollingsequence/pollingSequenceFactory.h b/linux/fsfwconfig/pollingsequence/pollingSequenceFactory.h
index 3e5ead52..99fba4ad 100644
--- a/linux/fsfwconfig/pollingsequence/pollingSequenceFactory.h
+++ b/linux/fsfwconfig/pollingsequence/pollingSequenceFactory.h
@@ -49,7 +49,7 @@ ReturnValue_t pstGompaceCan(FixedTimeslotTaskIF* thisSequence);
 
 ReturnValue_t pstSpiAndSyrlinks(FixedTimeslotTaskIF* thisSequence);
 
-ReturnValue_t pstAcs(FixedTimeslotTaskIF* thisSequence, AcsPstCfg cfg);
+ReturnValue_t pstTcsAndAcs(FixedTimeslotTaskIF* thisSequence, AcsPstCfg cfg);
 
 ReturnValue_t pstI2c(FixedTimeslotTaskIF* thisSequence);