[Onni starts explaining, and while Carlisle is listening, he doesn't hear anything he finds terribly promising regarding, Onni, Cole, and whether or not their conjoined healing will be useful in an actual emergency. The fact it takes both of them to make it work somewhat undermines Onni's usefulness as a healer, and what good is Cole if he only provides the energy, but none of the actual work? And what happens if one of them is the injured party? Or unconscious? What good is a healer who cannot heal themselves?

Carlisle does, however, have the sense to keep that to himself for a change, as he gets the feeling they're just going to argue in circles over semantics when they are likely talking about two different kinds of healing, and he's already been in one verbal spat over whether or not a god trapped in Anchor is much of one at all.

Besides that, Onni doesn't give him time to argue before moving onto the next question.]

A colloquialism. Not an insult so much as a polite expression of aggravation, though why it doesn't seem to translate like the rest of the tongues spoken here is beyond me.