yea of course i meant HD, im reading so much stuffs that i got confused 
mmm ok so it is just about a delay thing not about what u press if strong or weaks. damn is so frustrating i cant try by muself and have to bust ur balls and ask u guys 
2 crouch B , delaied HD dont push the opponent too far to dont need a dash too ? i mean is a sure thing that the auto C will hit or it could happen that it whiff sometimes
and is it always a C coming out after the delaied HD ?
thanks for ur answer anyway and i look forward for some suggestions about the sinergy question too
Don't worry about asking us questions. I enjoy teaching people (and learning) more about games I like, and I think a lot of fans here feel the same way.
A delayed HD activation always results in a C, because the input is BC. When two buttons are input simultaneously, the stronger button press takes priority. (If for example, you pressed BD by themselves, you'd get a D.)
Delayed HD activation is almost a trick. You're too late to cancel your attack into the dash, but too early to do standalone HD. Since the game won't let you auto-dash, or do the activation animation, it defaults to which ever button has priority, which is of course C. In this way, it's almost like a glitch, but hardly a game breaking one.
Actually, I confess that while I understand how it works, I'm not very clear on when and how to utilize it effectively. Hopefully other people can help with that.