a bit confused about Exeller, Exeitor, and S*rk's relationship.

So as we know Exeller and Exetior do in fact know each other from the Tails solo ending in TSoH
With that, does that mean that Exeller also knows about S*rk or is he just irrelevant/noncanon in TSoH?

My apologize if my post is low quality, im simply confused about the overall lore. I really only follow TSoH's lore and such so im unaware of anything beyond that.