diff --git a/src/darwin/Framework/CHIP/MTRDevice.mm b/src/darwin/Framework/CHIP/MTRDevice.mm
index 0e079eb10efd8d..552c99c7e873b4 100644
--- a/src/darwin/Framework/CHIP/MTRDevice.mm
+++ b/src/darwin/Framework/CHIP/MTRDevice.mm
@@ -280,8 +280,6 @@ @implementation MTRDevice {
     // _allNetworkFeatures is a bitwise or of the feature maps of all network commissioning clusters
     // present on the device, or nil if there aren't any.
     NSNumber * _Nullable _allNetworkFeatures;
-    // Most recent entry in _mostRecentReportTimes, if any.
-    NSDate * _Nullable _mostRecentReportTimeForDescription;
 }
 
 - (instancetype)initForSubclassesWithNodeID:(NSNumber *)nodeID controller:(MTRDeviceController *)controller
@@ -297,44 +295,6 @@ - (instancetype)initForSubclassesWithNodeID:(NSNumber *)nodeID controller:(MTRDe
     return self;
 }
 
-- (instancetype)initWithNodeID:(NSNumber *)nodeID controller:(MTRDeviceController *)controller
-{
-    if (self = [super init]) {
-        _lock = OS_UNFAIR_LOCK_INIT;
-        _descriptionLock = OS_UNFAIR_LOCK_INIT;
-        _nodeID = [nodeID copy];
-        _fabricIndex = controller.fabricIndex;
-        _deviceController = controller;
-        _queue
-            = dispatch_queue_create("org.csa-iot.matter.framework.device.workqueue", DISPATCH_QUEUE_SERIAL_WITH_AUTORELEASE_POOL);
-        _asyncWorkQueue = [[MTRAsyncWorkQueue alloc] initWithContext:self];
-        _state = MTRDeviceStateUnknown;
-        if (controller.controllerDataStore) {
-            _persistedClusterData = [[NSCache alloc] init];
-        } else {
-            _persistedClusterData = nil;
-        }
-        _clusterDataToPersist = nil;
-        _persistedClusters = [NSMutableSet set];
-
-        // If there is a data store, make sure we have an observer to monitor system clock changes, so
-        // NSDate-based write coalescing could be reset and not get into a bad state.
-        if (_persistedClusterData) {
-            mtr_weakify(self);
-            _systemTimeChangeObserverToken = [[NSNotificationCenter defaultCenter] addObserverForName:NSSystemClockDidChangeNotification object:nil queue:nil usingBlock:^(NSNotification * _Nonnull notification) {
-                mtr_strongify(self);
-                std::lock_guard lock(self->_lock);
-                [self _resetStorageBehaviorState];
-            }];
-        }
-
-        _delegates = [NSMutableSet set];
-
-        MTR_LOG_DEBUG("%@ init with hex nodeID 0x%016llX", self, _nodeID.unsignedLongLongValue);
-    }
-    return self;
-}
-
 - (void)dealloc
 {
     [[NSNotificationCenter defaultCenter] removeObserver:_systemTimeChangeObserverToken];
@@ -727,16 +687,6 @@ - (void)_persistClusterDataAsNeeded
     _clusterDataPersistenceFirstScheduledTime = nil;
 }
 
-#ifdef DEBUG
-- (void)unitTestSetMostRecentReportTimes:(NSMutableArray<NSDate *> *)mostRecentReportTimes
-{
-    _mostRecentReportTimes = mostRecentReportTimes;
-
-    std::lock_guard lock(_descriptionLock);
-    _mostRecentReportTimeForDescription = [mostRecentReportTimes lastObject];
-}
-#endif
-
 - (void)_scheduleClusterDataPersistence
 {
     os_unfair_lock_assert_owner(&self->_lock);
@@ -788,11 +738,6 @@ - (void)_scheduleClusterDataPersistence
     }
     [_mostRecentReportTimes addObject:[NSDate now]];
 
-    {
-        std::lock_guard lock(_descriptionLock);
-        _mostRecentReportTimeForDescription = [_mostRecentReportTimes lastObject];
-    }
-
     // Calculate running average and update multiplier - need at least 2 items to calculate intervals
     if (_mostRecentReportTimes.count > 2) {
         NSTimeInterval cumulativeIntervals = 0;
@@ -858,10 +803,6 @@ - (void)_resetStorageBehaviorState
 
     _clusterDataPersistenceFirstScheduledTime = nil;
     _mostRecentReportTimes = nil;
-    {
-        std::lock_guard lock(_descriptionLock);
-        _mostRecentReportTimeForDescription = nil;
-    }
     _deviceReportingExcessivelyStartTime = nil;
     _reportToPersistenceDelayCurrentMultiplier = 1;
 
diff --git a/src/darwin/Framework/CHIP/MTRDevice_Concrete.h b/src/darwin/Framework/CHIP/MTRDevice_Concrete.h
index 6466a18c04abf6..74a9a5788c5b8b 100644
--- a/src/darwin/Framework/CHIP/MTRDevice_Concrete.h
+++ b/src/darwin/Framework/CHIP/MTRDevice_Concrete.h
@@ -18,10 +18,14 @@
 #import <Foundation/Foundation.h>
 #import <Matter/MTRDevice.h>
 
+#import "MTRDeviceController_Concrete.h"
+
 NS_ASSUME_NONNULL_BEGIN
 
 @interface MTRDevice_Concrete : MTRDevice
 
+- (instancetype)initWithNodeID:(NSNumber *)nodeID controller:(MTRDeviceController_Concrete *)controller;
+
 @end
 
 NS_ASSUME_NONNULL_END
diff --git a/src/darwin/Framework/CHIP/MTRDevice_Concrete.mm b/src/darwin/Framework/CHIP/MTRDevice_Concrete.mm
index 0b6b073a57649c..a2dbb2dcbaf35d 100644
--- a/src/darwin/Framework/CHIP/MTRDevice_Concrete.mm
+++ b/src/darwin/Framework/CHIP/MTRDevice_Concrete.mm
@@ -361,7 +361,7 @@ @implementation MTRDevice_Concrete {
 //@synthesize lock = _lock;
 //@synthesize persistedClusterData = _persistedClusterData;
 
-- (instancetype)initWithNodeID:(NSNumber *)nodeID controller:(MTRDeviceController *)controller
+- (instancetype)initWithNodeID:(NSNumber *)nodeID controller:(MTRDeviceController_Concrete *)controller
 {
     // `super` was NSObject, is now MTRDevice.  MTRDevice hides its `init`
     if (self = [super initForSubclassesWithNodeID:nodeID controller:controller]) {
diff --git a/src/darwin/Framework/CHIP/MTRDevice_Internal.h b/src/darwin/Framework/CHIP/MTRDevice_Internal.h
index d0661b2590e9cd..6aea99eeda1ffb 100644
--- a/src/darwin/Framework/CHIP/MTRDevice_Internal.h
+++ b/src/darwin/Framework/CHIP/MTRDevice_Internal.h
@@ -123,7 +123,6 @@ MTR_DIRECT_MEMBERS
 }
 
 - (instancetype)initForSubclassesWithNodeID:(NSNumber *)nodeID controller:(MTRDeviceController *)controller;
-- (instancetype)initWithNodeID:(NSNumber *)nodeID controller:(MTRDeviceController *)controller;
 
 // called by controller to clean up and shutdown
 - (void)invalidate;
diff --git a/src/darwin/Framework/CHIP/MTRDevice_XPC.h b/src/darwin/Framework/CHIP/MTRDevice_XPC.h
index a2df4a60446aec..ddde470e7d1a28 100644
--- a/src/darwin/Framework/CHIP/MTRDevice_XPC.h
+++ b/src/darwin/Framework/CHIP/MTRDevice_XPC.h
@@ -17,10 +17,14 @@
 
 #import <Matter/Matter.h>
 
+#import "MTRDeviceController_XPC.h"
+
 NS_ASSUME_NONNULL_BEGIN
 
 @interface MTRDevice_XPC : MTRDevice <MTRXPCClientProtocol_MTRDevice>
 
+- (instancetype)initWithNodeID:(NSNumber *)nodeID controller:(MTRDeviceController_XPC *)controller;
+
 @end
 
 NS_ASSUME_NONNULL_END
diff --git a/src/darwin/Framework/CHIP/MTRDevice_XPC.mm b/src/darwin/Framework/CHIP/MTRDevice_XPC.mm
index 0827ee46602449..015736e179c2c4 100644
--- a/src/darwin/Framework/CHIP/MTRDevice_XPC.mm
+++ b/src/darwin/Framework/CHIP/MTRDevice_XPC.mm
@@ -84,10 +84,8 @@ @implementation MTRDevice_XPC
 
 @synthesize _internalState;
 
-- (instancetype)initWithNodeID:(NSNumber *)nodeID controller:(MTRDeviceController *)controller
+- (instancetype)initWithNodeID:(NSNumber *)nodeID controller:(MTRDeviceController_XPC *)controller
 {
-    // TODO: Verify that this is a valid MTRDeviceController_XPC?
-
     if (self = [super initForSubclassesWithNodeID:nodeID controller:controller]) {
         // Nothing else to do, all set.
     }