Is there any app that lets you use the separate BT earpieces (like AirPods etc) to communicate directly from one to the other?
You connect them to one phone, as normal, but then two people have each one in one ear and can talk to each other?
I was with a friend to a climbing hall, and even though it was a "quiet" time, it was still hard to talk when one person is far up on the wall and the other was securing you on the floor. Thought this could be a perfect solution.