Why not both? - No kicks if any player is engaged in combat. - No kicks once the final boss has been engaged, so there's no kicking after everything is dead and thus being out of combat.
Yesterday while questing with a friend I couldn't see some quest icons above NPC's but he could. Apperantly if you're over qualified you don't see them anymore. I'm 2 levels higher than he is and we are much higher than we need to be for the quests due to double exp last week.
It's so annoying when one roll is done and a new item is picked up at the same time. You really can't see a whole lot when that happens, so you have to stop fighting to pass so you at least have some room to see.