acolyte of chayula and combo

hi,
i am playing acolyte of chayula and gathering storm as the focus of my build and a huge part of the unnecessary friction is that neither gathering storm or siphoning strike generates combos and i want to use mantra of destruction and tempest bell for boss damage therefor i have to use another skill (ice strike) just to generate combo and it really ruins the flow of gameplay

combo states that you generate it by "Striking" enemies, and that a strike is a melee attack that directly hits and that aren't Slams

Siphoning is a Strike and it should generate combos, maybe a bugged interaction with "Payoff" tag? it doesn't use combo so it should give it
Gathering Storm is more of a gray area as its neither a strike or a slam (missing tag?) but it would help gameplay feel a lot if it did give combo and it would be a really slow combo maker so it would be fine but it would feel nice to go GS, GS, GS, GS, Bell, GS, GS, GS, GS on bosses and every now and then have access to mantra of destruction for that extra purple flames for clearing maps every now and then

it would help a lot with smoother gameplay for acolyte of chayula since i really want the extra chaos damage with mantra of destruction since that's what i am building around

Encountered this also, siphoning strike does not appear to build combo