I'm only coming in here to say one thing.
Bangs 5c may not take till whatever frame to hit crouchers, but..
for the purposes of lots of stuff you might do against other overheads, it's 18 frames. Cuz if you stand up, you get hit. If you want to dp, you better do it during the 1 frame gap before it goes active, forget jumping out, or throwing, etc.