yes, a combat ROUND, but not yet a combat. So speaking is free right now, and you can utter more than just 6 words.
About inter-group-quarrels: they happen, and please remember that this is a role-playing game, where players don't feel the same as their characters do. A good roleplaying opportunity is fine.
In no way do I want player-player kills. We're not evil, so quarreling is

, killing is

and out of the question.