Can't play Halo 2 online co-op

A buddy and I tried to play Halo 2 online co-op tonight, but it kept kicking us back to the main screen after a bit and wouldn’t connect. I’m sure glad I paid $60 for a game that two months later still can’t be played properly. You guys should extend the Halo apology offer past December 19th, because you guys sure as -Yoink- haven’t fixed this damn game yet.

Anyone have any idea if there’s anything I can do myself to get Halo 2 co-op working? Or do I just need to wait for the next patch and hope it starts working?