Are you sure that you are not accidentally pausing your playback by touching the temple or double tapping your middle finger?
What do you mean by "almost disconnected"? I don't get that...
The chirping might be indeed the "Bluetooth reconnect signal". That happens to me when I am listening to music and then open Instagram. The music stops and the Instagramsounds from the reels are starting.
Maybe you could have too many Bluetooth devices connected to your phone. When mine is paired with watch and glasses and car, my phone sometimes disconnects randomly one... But that's my phone not the glasses...
Hope I was able to help;)