If you're a player who plays public servers often...
Once in a blue moon, you'll find a random public team where the synergy is so perfect, it's hard to imagine how complete strangers are able to work in tandem, almost with little to no words and everything just works out magical. Without saying anything at all, everyone takes up the right roles, positions themselves right and supports each other.
Sometimes these bad boys end up being your future teammates whereas your strong synergy from before carries unto future games as you work alongside each other. It is during that time that you make great allies in-game who will join you in the rest of your KF careers.
Random public games are how I met the very great and supportive friends I have in KF, that up to today, still cross arms with me. =)
So, on a personal opinion, Public Games, I owe them a lot in keeping me in KF and helping me find great mates to play with.
I'm glad OP you found that type of synergy in a public game (well I am assuming it's a public game).