Same issue happens on my Dell Latitude 7300
Connecting very easy
Uses Teams or Messenger for 20 min + or - 5 min and then I don't hear anything but people continue to hear me... That's dangerous,,, lol. I used the same "cure" as stated above but it's anoying and sometimes it doesn't work; flipping from Air pods pro to Dell speakers and back to Air pods pro in the sound settings. Plus it takes several seconds to perform the opreration and then you loose what the others are saying.
Please a fix Microsoft. It's either Windows or Dell. I don't experience this on my mobile (Samsung S10) or bluetooth speaker (Bose).
PS, I got the Airpods pro a month ago with firmware 2d27and found a way to connect them to an iphone (I don't own one nor any iThings) and got the latest firmware 3A283