They may talk while playing with swords in movies, but given the fact that Bethesda wants a level of realism to the game I highly doubt they would have you talking during battle unless you have some crazy skills that are unreal! 

I don't think you would have time for chit chat while swinging a weapon/casting a spell at your enemy, unless you are taunting them. Or perhaps you mean after a fight you get to coordinate your next move with your ally while, for example, sneaking through a cave?