I actually did know that, yes, but in that video most of the times I landed ID I was right in a corner, and the few times I wasn't my timing is a bit of.
I'm using a 360 pad...periodically, as I'm still waiting for my SF4 TE stick to come in.
Anyways, yes i was giving up a lot of combo opportunities, i just try to overcomplicate things in my head. When I do hit with 5B from a somewhat-long distance, I usually think that there's so much more I could pull off than just a simple HF or GH, therefore I instinctually go into 5C or 6C and then try to go into a GH(Delay) 5B, ID.