[Waver dropped into the chair he'd been ineffectually beating up, trying to take this argument apart and examine it piece by piece while also in a state of moderate panic.]

Right...right, I suppose if this train essentially uses some variant on Second Magic, then traveling to differing points in time isn't so great a logical leap. Do one impossible thing, easy enough to do another. [He was muttering to himself as he worked it out, sounding like he half believed it and half needed to convince himself. Nervously, he started fidgeting with a pendant mostly hidden under his collar.]

...We have to figure out what the hell that means--what we need to do to get a message out. I can't let them think I abandoned them, and I know I can't be the only one to feel like that. And then we have to figure out how to get this damn train what it wants so we can leave.