Does Tessa eventually teach the other solver hosts how to do the skinsuit thing?
Nope. Even though they could technically learn how, it would be pretty difficult for them to pull off (Tessa’s situation is pretty unique among hosts) and none of them are really interested in being that organic.
However, [redacted because I’m not spoiling who yet] eventually becomes a post-human solver host similar to Tessa (either voluntarily or out of necessity, I haven’t decided which yet) and picks up the trick as well.
The AS itself might also get in on the action, albeit in a much more… grotesque way.












