I found a way to add big bang clash into Kunagi's combo
JC, 5B2B5C--> A+B+C --->5C(1)2C4C [xx], JC 236B--> 6A 412AC[x] J236A 4C ---> 41236 A+B+C
The J236A i is the most tricky part, the timing is strict....chaining into 5C would be more forgiving but it seems that Kunagi's ultimate can only be chained from 4C...