Ever since updating my Nexus 6 to Marshmallow, my phone disconnects my bluetooth connection if the audio is paused or no sound is playing after about 15 seconds. If something is playing, it stays connected fine. Example: I'm listening to an audio book through bluetooth in my car. I pull up to the Starbucks drive-through and pause the audio book (using the phone screen) so I can order. By the time I'm done ordering, the phone disconnects from my car's bluetooth and I have to manually reconnect. If I don't play something within 15 seconds, it disconnects again. I've tried turning off battery optimization settings for the obvious things, but didn't make a difference. Anyone have a fix or a similar problem? It worked fine before the update. Not the end of the world, just annoying.