I've done a particular combo off a TK Hirentotsu before (on the fly, however, not planned). I did 2147B, (dash), 5C, [j.C x 5], (land), 2C, 4DD, [j.C x 5], dj. [j.C x 5], 214B. I honestly can't remember if I did a CH or not (sorry). I never really tried pulling this off again (cause I'm afraid to TK H, whiffs with it are tough =(). The main thing I remember was my opponent bounced pretty high compared to the other times I've hit it.
I hope someone can elaborate on the situations where Hirentotsu causes a high bounce or not. Sometimes they bounce a little and sometimes as much as a Jakou. I think I hit them out of the air with my TK Hiren to start this combo. Once again, not 100% sure but I will attempt to test.
NOTE: I didn't know you can Jayoku after you hit the TK. Nice.