Hi Argun, thanks for your thorough answer! The BLE HCI logs looks like this: The highlighted portions are the relevant logs. The connection complete event also shows Unknown Connection Identifier! A few question: Do the parameters to the LE Create Connection command look good? Do you know why I'm seeing "Disconnect Complete - Connection failed to be Established?" The HCI logs immediately shows the disconnection after the create connection command without more context. Could an error be happening at a lower level? Is there a way I could get more detailed logs to understand this disconnect?

Hi again Argun, Thank you so much! This is a huge lead, will dig further on my end. I can't thank you enough. :-)