diff --git a/auracast/auracast.py b/auracast/auracast.py
index 566cf74..cf9b7e4 100644
--- a/auracast/auracast.py
+++ b/auracast/auracast.py
@@ -84,6 +84,7 @@ async def create_device(config: auracast_config.AuracastGlobalConfig) -> AsyncGe
             name=config.device_name,
             address=config.auracast_device_address,
             keystore='JsonKeyStore',
+            le_simultaneous_enabled=True #TODO: needed ?
         )
 
         device = bumble.device.Device.from_config_with_hci(
@@ -111,6 +112,9 @@ def run_async(async_command: Coroutine) -> None:
             color('!!! An error occurred while executing the command:', 'red'), message
         )
 
+PKGS_COUNT = 0
+ADVERTISING_INTERVAL_SLOWDOWN_FACTOR = 2
+
 async def run_broadcast(
         global_config : auracast_config.AuracastGlobalConfig,
         big_config: List[auracast_config.AuracastBigConfig]
@@ -184,9 +188,9 @@ async def run_broadcast(
                     advertising_event_properties=bumble.device.AdvertisingEventProperties(
                         is_connectable=False
                     ),
-                    primary_advertising_interval_min=100,
-                    primary_advertising_interval_max=200,
-                    advertising_sid=0 
+                    primary_advertising_interval_min=100*ADVERTISING_INTERVAL_SLOWDOWN_FACTOR,
+                    primary_advertising_interval_max=200*ADVERTISING_INTERVAL_SLOWDOWN_FACTOR,
+                    advertising_sid=i
                     # TODO: use 2mbit phy
                 ),
                 advertising_data=(
@@ -198,8 +202,8 @@ async def run_broadcast(
                     )
                 ),
                 periodic_advertising_parameters=bumble.device.PeriodicAdvertisingParameters(
-                    periodic_advertising_interval_min=80,
-                    periodic_advertising_interval_max=160,
+                    periodic_advertising_interval_min=80*ADVERTISING_INTERVAL_SLOWDOWN_FACTOR,
+                    periodic_advertising_interval_max=160*ADVERTISING_INTERVAL_SLOWDOWN_FACTOR,
                 ),
                 periodic_advertising_data=bigs[f'big{i}']['basic_audio_announcement'].get_advertising_data(),
                 auto_restart=True,
@@ -234,11 +238,21 @@ async def run_broadcast(
 
             bigs[f'big{i}']['frames_iterator'] = itertools.cycle(frames)
         
+        LOOP_FINITE_PKGS = -1 # set -1 to loop infinitely
+        
         logging.info("Broadcasting...")
         def on_packet_complete(event):
-            for val in bigs.values():
-                frame = next(val['frames_iterator'] )
-                val['big'].bis_links[0].write(frame)
+            global PKGS_COUNT
+            #for val in bigs.values(): # loop over bigs
+            #frame = next(val['frames_iterator'] )
+            #val['big'].bis_links[0].write(frame)
+            #global pkgs_count
+            PKGS_COUNT = PKGS_COUNT + 1
+            if PKGS_COUNT < LOOP_FINITE_PKGS or LOOP_FINITE_PKGS == -1 :
+                frame = next(bigs[f'big0']['frames_iterator'] )
+                bigs[f'big0']['big'].bis_links[0].write(frame)
+                bigs[f'big1']['big'].bis_links[0].write(frame)
+
 
         device.host.on('hci_number_of_completed_packets_event', on_packet_complete)
 
@@ -264,7 +278,7 @@ def broadcast(global_conf: auracast_config.AuracastGlobalConfig, big_conf: List[
 
 # -----------------------------------------------------------------------------
 if __name__ == "__main__":
-    logging.basicConfig(level=logging.INFO)
+    logging.basicConfig(level=logging.DEBUG)
 
     global_conf = auracast_config.global_base_config
     
@@ -273,14 +287,16 @@ if __name__ == "__main__":
     #global_conf.transport='serial:/dev/serial/by-id/usb-SEGGER_J-Link_001050076061-if02,1000000,rtscts' # transport for nrf53dk
 
     global_conf.transport='serial:/dev/serial/by-id/usb-SEGGER_J-Link_001057705357-if02,1000000,rtscts' # transport for nrf54l15dk
+   
     # TODO: why are nrf54l15 and nrf52 not streaming - no sound can be heard. Advertising starts, streaming too but no sound
     # nrf5340 audio dk log says: audio_datapath: Pres comp state never gets to locked
+    # Look at le audio transmitted packages with wireshark next ??
 
 
     
     bigs = [
         auracast_config.broadcast_de,
-        #auracast_config.broadcast_en
+        auracast_config.broadcast_en
         ]
     global_conf.octets_per_frame=60# 48kbps@24kHz