There appears to be some bluetooth related bug with the latest version of iOS and the 15PM.
I had a slightly different issue, I turned off bluetooth because I was connected to the car. I was making a phone call with bluetooth disabled, I turned bluetooth back on with the call started and my phone froze for a good 2-3 minutes before the call went through, my airpod pros connected and everything was normal after that.
Still restarted my phone though.
How about we don’t go down the planned obsolescence route with OLED panels? Yes, they look amazing, but miniLED is fine without the compromises on longevity.