@Chapstick
You can hold it too.... so long as you're in Critical Stun. For any character with a one two punch string..... those are Normal Hit Natural Combos.... even the AI can't hold those.
@Lulu: That's because Jann Lee's 4P leads into a sitdown stun, haha.
@Chapstick: That's not possible, i just checked. The only explanation is that you're delaying the second punch, as long as the upper left part of the screen says 2 Hit Combo, there's nothing you can do about it.
@Darkslay got it. An NC is a string where the follow-up attack is guaranteed such as Christie's 6PP on NH. On CH and on block, the second hit can be held. The NC rule applies to most fighting games.
@Lulu: Jann Lee's 4PP is pretty hardcore, i'll break it down for you.
The first hit is a sitdown stun, so it guarantees the second hit, the third hit is a lift stun into a 8 frame high, so its guaranteed, the third hit happens to also be a faint stun, so it guarantees the last hit.