Recently I played a ranked game where the team audio screwed up and we could hear each other even without pressing the key for voice chat.

Fast forward to next game, I could hear a guy speaking but the game wouldn't show who it was. It was not because of the bug tho because he did not hear me unless I used the key for voice comms.

As the game was going on I noticed that this guy didn't react accordingly to what was going on with the team (enemy would be rushing A site but this guy would call B and so on). This lead me to believe that somehow I was hearing the other teams comms, but it was not the case either.

So finally I say to my team: "Has anyone been speaking all the time or am I listening to the other team?". And that's when this happens:

Him: Wait, who are you playing?

Me: Killjoy

Him: But there is no killjoy...

Me: On your team?

Him: ON MY GAME

That's when we realized we had been hearing someone playing a different game the whole time. The best part is that his game ended before mine and we could still hear eachother and it was not until he closed his game that we lost contact.

TL;DR: I made contact with someone playing a different match in the game.

P.S: Not a native american, so sorry for potential bad writing.