If you have High Yield Torpedo II & I, do they still share a cooldown or are they separate? I'm wondering if I can have both to fire as many torpedos as possible at a time. Does it matter if the likewise skills are on the same BOFF or not? For example, if you have two Tactical Bridge Officers is there a difference between Officer A having HYT II and Officer B having HYT I, or Officer A having both HYT II & I?