About that taunt loop, I totally get it. The A bug hits while D bug is going down, has no real effect on the process, its just a single dive loop with a dive canceled taunt thrown in so you can taunt people while you combo them.
If you've ever released the C+D for dive loop too early so you dont do the 2nd dive, you will know what this looks like.
I already do the normal 2 hit dive loop and advance pinwheel loop while i combo, I would so throw a taunt in there just to do it!
PS: Upon further study, you don't have to dive cancel to do this combo.