Stange chun tech- jumping straight up off a wall

I have seen boss do ths about twice in a row- no nothing ridiculous like a megaman x wall hop chain, he landed, then did the second one… does anyone know how to do this? it would be much safer than a normal wall jump and would allow for some meter gain.

This would be the vid that I saw it in-

btw i meant to say “strange”

ive seen rikimaru do that too, any idea how its done?

super jump>wall super jump???

You cancel headstomp into wall jump VERY early