I got completely blasted with the loudest screech known to man just now after unplugging my headset. Had to hard power it off twice to get it to work again.
To be specific: I plugged in my Steel series Arctic 7P wirelessly on to the quest 2. I'm guessing plugging anything other than the power cable to the USB C port is a big no. Either way I'm not plugging anything into this thing any time soon.