diff --git a/subsys/bluetooth/controller/ll_sw/openisa/lll/lll.c b/subsys/bluetooth/controller/ll_sw/openisa/lll/lll.c
index 1e55a3b59bf..53075230cc0 100644
--- a/subsys/bluetooth/controller/ll_sw/openisa/lll/lll.c
+++ b/subsys/bluetooth/controller/ll_sw/openisa/lll/lll.c
@@ -49,10 +49,7 @@ static struct {
 static const struct device *dev_entropy;
 
 static int init_reset(void);
-static int prepare(lll_is_abort_cb_t is_abort_cb, lll_abort_cb_t abort_cb,
-		   lll_prepare_cb_t prepare_cb, int prio,
-		   struct lll_prepare_param *prepare_param, uint8_t is_resume);
-static int resume_enqueue(lll_prepare_cb_t resume_cb, int resume_prio);
+static int resume_enqueue(lll_prepare_cb_t resume_cb);
 
 #if !defined(CONFIG_BT_CTLR_LOW_LAT)
 static void ticker_start_op_cb(uint32_t status, void *param);
@@ -193,24 +190,6 @@ int lll_reset(void)
 	return 0;
 }
 
-int lll_prepare(lll_is_abort_cb_t is_abort_cb, lll_abort_cb_t abort_cb,
-		lll_prepare_cb_t prepare_cb, int prio,
-		struct lll_prepare_param *prepare_param)
-{
-	return prepare(is_abort_cb, abort_cb, prepare_cb, prio, prepare_param,
-		       0);
-}
-
-void lll_resume(void *param)
-{
-	struct lll_event *next = param;
-	int ret;
-
-	ret = prepare(next->is_abort_cb, next->abort_cb, next->prepare_cb,
-		      next->prio, &next->prepare_param, next->is_resume);
-	LL_ASSERT(!ret || ret == -EINPROGRESS);
-}
-
 void lll_disable(void *param)
 {
 	/* LLL disable of current event, done is generated */
@@ -305,8 +284,7 @@ bool lll_is_done(void *param)
 	return !event.curr.abort_cb;
 }
 
-int lll_is_abort_cb(void *next, int prio, void *curr,
-			 lll_prepare_cb_t *resume_cb, int *resume_prio)
+int lll_is_abort_cb(void *next, void *curr, lll_prepare_cb_t *resume_cb)
 {
 	return -ECANCELED;
 }
@@ -440,9 +418,10 @@ static int init_reset(void)
 	return 0;
 }
 
-static int prepare(lll_is_abort_cb_t is_abort_cb, lll_abort_cb_t abort_cb,
-		   lll_prepare_cb_t prepare_cb, int prio,
-		   struct lll_prepare_param *prepare_param, uint8_t is_resume)
+int lll_prepare_resolve(lll_is_abort_cb_t is_abort_cb, lll_abort_cb_t abort_cb,
+			lll_prepare_cb_t prepare_cb,
+			struct lll_prepare_param *prepare_param,
+			uint8_t is_resume, uint8_t is_dequeue)
 {
 	uint8_t idx = UINT8_MAX;
 	struct lll_event *p;
@@ -469,7 +448,7 @@ static int prepare(lll_is_abort_cb_t is_abort_cb, lll_abort_cb_t abort_cb,
 
 		/* Store the next prepare for deferred call */
 		ret = ull_prepare_enqueue(is_abort_cb, abort_cb, prepare_param,
-					  prepare_cb, prio, is_resume);
+					  prepare_cb, is_resume);
 		LL_ASSERT(!ret);
 
 #if !defined(CONFIG_BT_CTLR_LOW_LAT)
@@ -499,11 +478,11 @@ static int prepare(lll_is_abort_cb_t is_abort_cb, lll_abort_cb_t abort_cb,
 		if (next) {
 			/* check if resume requested by curr */
 			ret = event.curr.is_abort_cb(NULL, 0, event.curr.param,
-						     &resume_cb, &resume_prio);
+						     &resume_cb);
 			LL_ASSERT(ret);
 
 			if (ret == -EAGAIN) {
-				ret = resume_enqueue(resume_cb, resume_prio);
+				ret = resume_enqueue(resume_cb);
 				LL_ASSERT(!ret);
 			} else {
 				LL_ASSERT(ret == -ECANCELED);
@@ -527,7 +506,7 @@ static int prepare(lll_is_abort_cb_t is_abort_cb, lll_abort_cb_t abort_cb,
 	return err;
 }
 
-static int resume_enqueue(lll_prepare_cb_t resume_cb, int resume_prio)
+static int resume_enqueue(lll_prepare_cb_t resume_cb)
 {
 	struct lll_prepare_param prepare_param;
 
@@ -535,7 +514,7 @@ static int resume_enqueue(lll_prepare_cb_t resume_cb, int resume_prio)
 	event.curr.param = NULL;
 
 	return ull_prepare_enqueue(event.curr.is_abort_cb, event.curr.abort_cb,
-				   &prepare_param, resume_cb, resume_prio, 1);
+				   &prepare_param, resume_cb, 1);
 }
 
 #if !defined(CONFIG_BT_CTLR_LOW_LAT)
@@ -598,7 +577,6 @@ static void preempt(void *param)
 	struct lll_event *next = ull_prepare_dequeue_get();
 	lll_prepare_cb_t resume_cb;
 	uint8_t idx = UINT8_MAX;
-	int resume_prio;
 	int ret;
 
 	if (!event.curr.abort_cb || !event.curr.param) {
@@ -618,9 +596,9 @@ static void preempt(void *param)
 		return;
 	}
 
-	ret = event.curr.is_abort_cb(next->prepare_param.param, next->prio,
+	ret = event.curr.is_abort_cb(next->prepare_param.param,
 				     event.curr.param,
-				     &resume_cb, &resume_prio);
+				     &resume_cb);
 	if (!ret) {
 		/* Let LLL know about the cancelled prepare */
 		next->is_aborted = 1;
@@ -647,7 +625,7 @@ static void preempt(void *param)
 			iter = ull_prepare_dequeue_iter(&iter_idx);
 		}
 
-		ret = resume_enqueue(resume_cb, resume_prio);
+		ret = resume_enqueue(resume_cb);
 		LL_ASSERT(!ret);
 	} else {
 		LL_ASSERT(ret == -ECANCELED);
diff --git a/subsys/bluetooth/controller/ll_sw/openisa/lll/lll_adv.c b/subsys/bluetooth/controller/ll_sw/openisa/lll/lll_adv.c
index d1c7cf39ff7..69498753fab 100644
--- a/subsys/bluetooth/controller/ll_sw/openisa/lll/lll_adv.c
+++ b/subsys/bluetooth/controller/ll_sw/openisa/lll/lll_adv.c
@@ -46,8 +46,7 @@
 
 static int init_reset(void);
 static int prepare_cb(struct lll_prepare_param *prepare_param);
-static int is_abort_cb(void *next, int prio, void *curr,
-		       lll_prepare_cb_t *resume_cb, int *resume_prio);
+static int is_abort_cb(void *next, void *curr, lll_prepare_cb_t *resume_cb);
 static void abort_cb(struct lll_prepare_param *prepare_param, void *param);
 static void isr_tx(void *param);
 static void isr_rx(void *param);
@@ -447,8 +446,7 @@ static int resume_prepare_cb(struct lll_prepare_param *p)
 }
 #endif /* CONFIG_BT_PERIPHERAL */
 
-static int is_abort_cb(void *next, int prio, void *curr,
-		       lll_prepare_cb_t *resume_cb, int *resume_prio)
+static int is_abort_cb(void *next, void *curr, lll_prepare_cb_t *resume_cb)
 {
 #if defined(CONFIG_BT_PERIPHERAL)
 	struct lll_adv *lll = curr;
@@ -464,7 +462,6 @@ static int is_abort_cb(void *next, int prio, void *curr,
 
 			/* wrap back after the pre-empter */
 			*resume_cb = resume_prepare_cb;
-			*resume_prio = 0; /* TODO: */
 
 			/* Retain HF clk */
 			err = lll_clk_on();
diff --git a/subsys/bluetooth/controller/ll_sw/openisa/lll/lll_internal.h b/subsys/bluetooth/controller/ll_sw/openisa/lll/lll_internal.h
index 39d1379709c..69a9827812e 100644
--- a/subsys/bluetooth/controller/ll_sw/openisa/lll/lll_internal.h
+++ b/subsys/bluetooth/controller/ll_sw/openisa/lll/lll_internal.h
@@ -4,14 +4,10 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-int lll_prepare(lll_is_abort_cb_t is_abort_cb, lll_abort_cb_t abort_cb,
-		lll_prepare_cb_t prepare_cb, int prio,
-		struct lll_prepare_param *prepare_param);
 int lll_prepare_done(void *param);
 int lll_done(void *param);
 bool lll_is_done(void *param);
-int lll_is_abort_cb(void *next, int prio, void *curr,
-			 lll_prepare_cb_t *resume_cb, int *resume_prio);
+int lll_is_abort_cb(void *next, void *curr, lll_prepare_cb_t *resume_cb);
 void lll_abort_cb(struct lll_prepare_param *prepare_param, void *param);
 
 int lll_clk_on(void);
diff --git a/subsys/bluetooth/controller/ll_sw/openisa/lll/lll_scan.c b/subsys/bluetooth/controller/ll_sw/openisa/lll/lll_scan.c
index 371587cdcc6..5f130101ffa 100644
--- a/subsys/bluetooth/controller/ll_sw/openisa/lll/lll_scan.c
+++ b/subsys/bluetooth/controller/ll_sw/openisa/lll/lll_scan.c
@@ -41,8 +41,7 @@
 
 static int init_reset(void);
 static int prepare_cb(struct lll_prepare_param *prepare_param);
-static int is_abort_cb(void *next, int prio, void *curr,
-		       lll_prepare_cb_t *resume_cb, int *resume_prio);
+static int is_abort_cb(void *next, void *curr, lll_prepare_cb_t *resume_cb);
 static void abort_cb(struct lll_prepare_param *prepare_param, void *param);
 static void ticker_stop_cb(uint32_t ticks_at_expire, uint32_t remainder, uint16_t lazy,
 			   uint8_t force, void *param);
@@ -276,8 +275,7 @@ static int resume_prepare_cb(struct lll_prepare_param *p)
 	return prepare_cb(p);
 }
 
-static int is_abort_cb(void *next, int prio, void *curr,
-		       lll_prepare_cb_t *resume_cb, int *resume_prio)
+static int is_abort_cb(void *next, void *curr, lll_prepare_cb_t *resume_cb)
 {
 	struct lll_scan *lll = curr;
 
@@ -287,7 +285,6 @@ static int is_abort_cb(void *next, int prio, void *curr,
 
 		/* wrap back after the pre-empter */
 		*resume_cb = resume_prepare_cb;
-		*resume_prio = 0; /* TODO: */
 
 		/* Retain HF clk */
 		err = lll_clk_on();