Showing Who You're Pairing With
By default, Tuple will show who you're pairing with to people who are friends or teammates with both you and your pair:
(Since I'm friends with Mikey and Joel, I can see when they're on a call together.)
If a friend is pairing with people you aren't friends with or a teammate of, you'll see an anonymized version:
( I'm not friends with Spencer's friends, so his call is shrouded in mystery.)
Naturally, you can disable this behavior in preferences: