You got a point there. Though I do wonder if Jane-time is adjustible by taking Jane-device to speeded or slowed time. Not a good thing to experiment on granted. Did something like that happen when she lived in Aegis?

Could Shell Bell force a door to no-Jane worlds? In that case you could look for a volunteer in the target world instead. Bigger sample size and no waiting. I'd volunteer but I bet my world is Jane-able since we have internet.