I understand about having multiple copies of a power - say Tactical Team - so that the cooldown time is reduced. Do you need the icon for both copies to be actually in the tray? It seems that when I trigger one copy, both copies begin the cooldown countdown, with one having a much shorter time (usually one = 30 sec, the other is 15). So in 15 sec, I can hit it again. But if both copies are not there, would I miss that? Would it take 30 seconds each time?