Yeah so I've had pretty limited time to test shit out in training due to the tournament coming up but I was able to test some shit out, for one in that japanese video the reason ryo misses the dp cancel into ranbu dm is because he used A version dp, it does not connect under aany circumstances , but C version cancel does, and it works for any dm including the fireball dm
Okay so I was testing the possibility of landing a free 2 hcb+d and the Only way that even came close was ex Zanretsuken you can cancel the end of the animation by the way(get back to this later cuz its important ) when u do the HCB+D it hits like the second of the move and you just kinda sail across the screen when you try the second one. So that didn't work either because A) the second hit does not juggle or B) or it really is that slow.
but back to the cancel animation this opens up alot of possiblities of extending combos by at least one more series the Ex HCB+BD Juggle into Ex Zanretsuken into Dp, (DC) HCB+D, Dp, and at this point you can
(DC)'s
EX ranbu DM, regular dm, fireball dm, And I think another regular zanretsuken or ex, haven't tested that part but if EX does and it should you have the possibility of ( considering you have full stocks ) EX Ranbu, or neomax, by the way after EX Zanrestuken you can straight up Neo max or ex Ranbu DM, corner only for regular dm, with no HD meter. Sorry I really suck at transcribing combos but anyways this is what i got so far I plan on making a list of everything that's possible( That I know of) it just takes me a really long time for me with my shitty write up skills lol