Jumping bodies in play

Just a very quick question: is there any roll or other mechanism involved in a Vaylen jumping bodies in play? I couldn’t find anything in the section (p196+) other than how to deal with skills, stats, BITs, etc. I assume the surgery rolls apply only to first-time hulls, yes?

I would assume changing bodies takes some time: a color scene? Can it be done in the middle of a Builder? Or does it take no time at all? I would assume there has to be some kind of flag to other players that you’ve just done so…but maybe not? Is body-changing as quick/easy as getting into Iron?

p.

No narrative time at all, in general. Just has to be opportunity for the worm to get from skull to skull. Definitely no surgery necessary for a pre-hulled body.