Abkronos

Hey, thanks so much! So, to answer your questions:

1. The amount of span cleared by spending time resting is based on the magnitude of that time, in a similar fashion to how you calculate how much span to mark in the first place when travelling, so ideally the player should state up front how much time they're choosing to rest for (resting just being anything that's not a stressful action-packed thing or doing actual time-travel, your table's preference naturally as to the bounds of that, and what the PC might need to go about doing in order to get that rest time). So if they chose to rest for a few days, they'd clear 3 span, a few weeks to clear 4, etc. - this means there is kind of an upper limit to how much span can be cleared in one go, since apart from being able to time travel, we can generally assume the person has a normal human lifespan (unless they somehow have access to wacky future lifespan-enhancement drugs or whatever, naturally).

I had one session I ran where the player had just had their character go a few weeks into the past within the same general location in order to set up a chain of events, so once they'd done what they needed to do, they just elected to lie low and wait out the intervening time in order to clear 4 span rather than time-travelling directly back to the "present" of the campaign.

2. The way I run it, they'd absolutely get that weirding right away, and roll over by 6 boxes, as you said. They can go as far in space and time as they want, within the bounds of the magnitude table, it's just gonna get way more dangerous for 'em.