Not sure if you noticed this: when you’re using AirPods for audio, if you use unlock iPhone with Apple Watch (with a mask on), the audio sometimes stutters for a very short period. For me this start happening since iOS 14.5, someone on apple forum reported the same issue.
discussions.apple.com
My personal theory is that they didn’t limit the bluetooth bandwidth for the unlocking behavior, so it caused a racing condition between unlocking and bluetooth audio. Hopefully they can fix it by limiting the bluetooth bandwidth, at the price of unlocking speed.
Unlock with Apple Watch causes audio to B… - Apple Community
My personal theory is that they didn’t limit the bluetooth bandwidth for the unlocking behavior, so it caused a racing condition between unlocking and bluetooth audio. Hopefully they can fix it by limiting the bluetooth bandwidth, at the price of unlocking speed.