Ancestral swiftness and primordial wave

I’ve seen many people say to use Primordial Wave right after Ancestral Swiftness but ancestral wave doesnt affect primordial wave…
Isn’t it bettter to Ancestral wave > lava burst > primodial wave > lava burst.
This way u have 2 instant lava bursts in a row.

I’m confused, what do i do?