Disconnect players

I just played 3v3 game where a player first bragged about having possibility to disconnect players whenever he wishes and win “singlehandly”. And after a minute or so he did. His allies dropped by themself I think. I and my friend got out of sync error. And after scoreview aoe4 closed itself.

No idea how it was done, but it’s kind of gamebreaking?
No idea how to give “proof” it happened.
I can’t see chat during replays.


Match history says the match was lost, but I and others who got dropped got “No Result”