diff --git a/source/core.py b/source/core.py
index 3f5de929186..3304d197ae6 100644
--- a/source/core.py
+++ b/source/core.py
@@ -351,9 +351,6 @@ def main():
 	import speech
 	log.debug("Initializing speech")
 	speech.initialize()
-	from speech import sayAll
-	log.debug("Initializing sayAllHandler")
-	sayAll.initialize()
 	if not globalVars.appArgs.minimal and (time.time()-globalVars.startTime)>5:
 		log.debugWarning("Slow starting core (%.2f sec)" % (time.time()-globalVars.startTime))
 		# Translators: This is spoken when NVDA is starting.
diff --git a/source/documentBase.py b/source/documentBase.py
index 84e949e26e4..c112cc8998a 100644
--- a/source/documentBase.py
+++ b/source/documentBase.py
@@ -4,13 +4,11 @@
 #See the file COPYING for more details.
 
 from baseObject import AutoPropertyObject, ScriptableObject
-from scriptHandler import isScriptWaiting
 import config
 import textInfos
-import speech
-import ui
 import controlTypes
 
+
 class TextContainerObject(AutoPropertyObject):
 	"""
 	An object that contains text which can be accessed via a call to a makeTextInfo method.
@@ -141,6 +139,12 @@ def _getNearestTableCell(self, tableID, startPos, origRow, origCol, origRowSpan,
 		raise LookupError
 
 	def _tableMovementScriptHelper(self, movement="next", axis=None):
+		# documentBase is a core module and should not depend on these UI modules and so they are imported
+		# at run-time. (#12404)
+		from scriptHandler import isScriptWaiting
+		from speech import speakTextInfo
+		import ui
+
 		if isScriptWaiting():
 			return
 		formatConfig=config.conf["documentFormatting"].copy()
@@ -162,7 +166,7 @@ def _tableMovementScriptHelper(self, movement="next", axis=None):
 			# Retrieve the cell on which we started.
 			info = self._getTableCellAt(tableID, self.selection,origRow, origCol)
 
-		speech.speakTextInfo(info, formatConfig=formatConfig, reason=controlTypes.OutputReason.CARET)
+		speakTextInfo(info, formatConfig=formatConfig, reason=controlTypes.OutputReason.CARET)
 		info.collapse()
 		self.selection = info
 
@@ -187,6 +191,8 @@ def script_previousColumn(self, gesture):
 	script_previousColumn.__doc__ = _("moves to the previous table column")
 
 	def script_toggleIncludeLayoutTables(self,gesture):
+		# documentBase is a core module and should not depend on UI, so it is imported at run-time. (#12404)
+		import ui
 		if config.conf["documentFormatting"]["includeLayoutTables"]:
 			# Translators: The message announced when toggling the include layout tables browse mode setting.
 			state = _("layout tables off")
@@ -205,5 +211,3 @@ def script_toggleIncludeLayoutTables(self,gesture):
 		"kb:control+alt+rightArrow": "nextColumn",
 		"kb:control+alt+leftArrow": "previousColumn",
 	}
-
-
diff --git a/source/scriptHandler.py b/source/scriptHandler.py
index dc88adb574a..517ee6ee384 100644
--- a/source/scriptHandler.py
+++ b/source/scriptHandler.py
@@ -6,12 +6,9 @@
 from typing import List, Optional
 import time
 import weakref
-import inspect
 import types
 import config
-import speech
 from speech import sayAll
-import appModuleHandler
 import api
 import queueHandler
 from logHandler import log
@@ -19,7 +16,6 @@
 import globalPluginHandler
 import braille
 import vision
-import keyLabels
 import baseObject
 
 _numScriptsQueued=0 #Number of scripts that are queued to be executed
diff --git a/source/speech/__init__.py b/source/speech/__init__.py
index 2f91aabcffe..05bbf0f4132 100644
--- a/source/speech/__init__.py
+++ b/source/speech/__init__.py
@@ -55,6 +55,7 @@
 	speakSpelling,
 	speakText,
 	speakTextInfo,
+	SpeakTextInfoState,
 	speakTextSelected,
 	speakTypedCharacters,
 	SpeechMode,
@@ -132,6 +133,7 @@
 	"speakSpelling",
 	"speakText",
 	"speakTextInfo",
+	"SpeakTextInfoState",
 	"speakTextSelected",
 	"speakTypedCharacters",
 	"SpeechMode",
@@ -142,13 +144,22 @@
 import synthDriverHandler
 import config
 from .speech import initialize as speechInitialize
+from .sayAll import initialize as sayAllInitialize
 
 
 def initialize():
-	"""Loads and sets the synth driver configured in nvda.ini."""
+	""" Loads and sets the synth driver configured in nvda.ini.
+	Initializes the state of speech and initializes the sayAllHandler
+	"""
 	synthDriverHandler.initialize()
 	synthDriverHandler.setSynth(config.conf["speech"]["synth"])
 	speechInitialize()
+	sayAllInitialize(
+		speak,
+		speakObject,
+		getTextInfoSpeech,
+		SpeakTextInfoState,
+	)
 
 
 def terminate():
diff --git a/source/speech/sayAll.py b/source/speech/sayAll.py
index 03138ff5ffd..1714fdeca4f 100644
--- a/source/speech/sayAll.py
+++ b/source/speech/sayAll.py
@@ -5,15 +5,9 @@
 # Julien Cochuyt
 
 from enum import IntEnum
-from typing import TYPE_CHECKING
+from typing import Callable, TYPE_CHECKING
 import weakref
 import garbageHandler
-from .speech import (
-	speak,
-	getTextInfoSpeech,
-	SpeakTextInfoState,
-	speakObject,
-)
 from logHandler import log
 import config
 import controlTypes
@@ -26,11 +20,17 @@
 from .speechWithoutPauses import SpeechWithoutPauses
 
 from .types import (
+	SpeechSequence,
 	_flattenNestedSequences,
 )
 
 if TYPE_CHECKING:
 	import NVDAObjects
+	from .speech import (
+		getTextInfoSpeech,
+		SpeakTextInfoState,
+		speakObject,
+	)
 
 
 class CURSOR(IntEnum):
@@ -41,18 +41,38 @@ class CURSOR(IntEnum):
 SayAllHandler = None
 
 
-def initialize():
+def initialize(
+		speakFunc: Callable[[SpeechSequence], None],
+		speakObject: 'speakObject',
+		getTextInfoSpeech: 'getTextInfoSpeech',
+		SpeakTextInfoState: 'SpeakTextInfoState',
+):
+	log.debug("Initializing sayAllHandler")
 	global SayAllHandler
-	SayAllHandler = _SayAllHandler(SpeechWithoutPauses(speakFunc=speak))
+	SayAllHandler = _SayAllHandler(
+		SpeechWithoutPauses(speakFunc=speakFunc),
+		speakObject,
+		getTextInfoSpeech,
+		SpeakTextInfoState,
+	)
 
 
 class _SayAllHandler:
-	def __init__(self, speechWithoutPausesInstance: SpeechWithoutPauses):
+	def __init__(
+			self,
+			speechWithoutPausesInstance: SpeechWithoutPauses,
+			speakObject: 'speakObject',
+			getTextInfoSpeech: 'getTextInfoSpeech',
+			SpeakTextInfoState: 'SpeakTextInfoState',
+	):
 		self.lastSayAllMode = None
 		self.speechWithoutPausesInstance = speechWithoutPausesInstance
 		#: The active say all manager.
 		#: This is a weakref because the manager should be allowed to die once say all is complete.
 		self._getActiveSayAll = lambda: None  # noqa: Return None when called like a dead weakref.
+		self._speakObject = speakObject
+		self._getTextInfoSpeech = getTextInfoSpeech
+		self._makeSpeakTextInfoState = SpeakTextInfoState
 
 	def stop(self):
 		'''
@@ -115,7 +135,11 @@ def next(self):
 			return
 		# Call this method again when we start speaking this object.
 		callbackCommand = CallbackCommand(self.next, name="say-all:next")
-		speakObject(obj, reason=controlTypes.OutputReason.SAYALL, _prefixSpeechCommand=callbackCommand)
+		SayAllHandler._speakObject(
+			obj,
+			reason=controlTypes.OutputReason.SAYALL,
+			_prefixSpeechCommand=callbackCommand
+		)
 
 	def stop(self):
 		self.walker = None
@@ -158,7 +182,7 @@ def __init__(self, handler: _SayAllHandler, cursor: CURSOR):
 			self.reader = api.getReviewPosition()
 		# #10899: SayAll profile can't be activated earlier because they may not be anything to read
 		self.trigger.enter()
-		self.speakTextInfoState = SpeakTextInfoState(self.reader.obj)
+		self.speakTextInfoState = SayAllHandler._makeSpeakTextInfoState(self.reader.obj)
 		self.numBufferedLines = 0
 
 	def nextLine(self):
@@ -207,7 +231,7 @@ def _onLineReached(obj=self.reader.obj, state=state):
 		# and insert the lineReached callback at the very beginning of the sequence.
 		# _linePrefix on speakTextInfo cannot be used here
 		# As it would be inserted in the sequence after all initial control starts which is too late.
-		speechGen = getTextInfoSpeech(
+		speechGen = SayAllHandler._getTextInfoSpeech(
 			self.reader,
 			unit=textInfos.UNIT_READINGCHUNK,
 			reason=controlTypes.OutputReason.SAYALL,