Four Player Chess Collusion

Just wanted to report first example of pre-game coordinated collusion between two players, that I've seen in four player chess. I played a game where Prusianito (1683 blue) and Davock (1632 yellow) colluded. The blue selfless attack was unusual, but it wasn't obvious until at the end of the game when I was spectating, they proceeded to rapidly exchange pieces in a coordinated way to maximize points once down to themselves as the last two players. Spectated a couple more games of theirs to be sure and they got real blatant, not even an attempt to hide the coordination.
Anyway thought I'd point it out, as a former poker player I enjoy the teaming up aspects of this variant, but if two players preemptively coordinate outside the message system (e.g. via VOIP\Skype or two computers with one person), it obviously ruins a good amount of the fun. Cheers,