I've been playing with my father-in-law (split screen) and my bro-in-law (over live) and have a problem with the communicator, or with halo 2, I dont know which.

I have set up a party, and bro joins. In the party lobby we can hear each other fine, but as soon as we start a game we can't hear each other. In my searches I see that maybe? this is intentional, since he is my enemy in-game. But We want to have a friendly game and trash talk each other after each kill. What am I doing wrong, or is it possible to set it up this way? There will be snatches of conversation caught occasionally in-game.

Thanks for any help you can give me.

Yeah if it's against each other you won't be able to talk to one another, those snatches as you call them are probably when one of the two of you die? That's what I've noted at least when I can hear other people.