From the Larian Gazette #6:
If your character walks into a dialogue situation, the cinematic dialogue begins with you by yourself. If one of your posse comes close, they can choose whether or not they join you in the discussion. Once they do, they can tell you what options they would like you to select as you ponder your next choice.
What I'd like to know is whether or not this is just a "decision vote" option or if multiple characters are actually in the conversation. It sounds like it's just a vote. But if that's the case, this is pretty underwhelming. How many multiplayer games aren't using some kind of voice software while they are playing to coordinate these kinds of decisions anyway?
If it's purely a vote option, is it democratic? I.e. if 3 players are talking to someone and two want one response but the initiator of the conversation wants another, does the initiator get the final say or does majority rule? I hope that there is an option for Majority Rule. I suspect that this would require a way for other conversation participants to "take over" the conversation if they're in the majority (because, presumably, no one can make another player say or do something they wouldn't choose to do... but others could step in and say or do something themselves and take the spotlight or move the conversation in another direction.)
Will the target of the conversation know/acknowledge that there are other characters participating in the conversation? Can it affect their responses?
Will response options reflect the unique options that various characters ("tags" in DOS2) bring to a conversation?
I'm hoping that this is more than just a option vote and will help cut down on the need for tag-team conversations ("Hey, who hasn't talked to the bartender yet?") and give others in multi-player groups more power to dictate what happens instead of handing all the power to the person who rushes in an initiates a conversation.