You are correct, I was in a hurry. I meant that in order to perform this entire "combo" you will require 4 seals... and "technically" you don't need 100% either as you gain some Heat while performing the combo.
This doesn't need to be a Counter Hit (vs Ragna). When I performed it in a match it worked fine. Unfortunately, that was just Ragna so I haven't tested it on anyone else.
@AtTheGates: Thank you for elaborating my quick post to Jeff.