Judging by Inigo's expression, the names don't seem too familiar to him. The train is a little too big for him to know everyone's names, after all, especially some of the people who are relatively more new. But he does nod, even with his slighty blank expression.

"From a world like yours, huh." That information needs a tiny bit more time to process. "So it's a world that's almost the same, yet slightly different? Something like that?"

At least he doesn't sound like his mind is blown by the idea. This train isn't Inigo's first rodeo with the whole weird time-space stuff.