Star Trek: Deep Space Nine

(You may have guessed I am rewatcing the show, so random questions occur to me as I do).

Why don't we get to see

spoiler

Verad (from IP)

during Facets? Was it just an oversight, or is there a minimum joining period required for someone to show up during a Zhian'tara ritual?

Given they go out of their way to mention the events if

spoiler

Equilibrium

, it made me curious.