[He knows he wouldn't have been fine. His confidence that Al needs him has been broken but he knows Al needs someone.

Al is still mad. He knows without even looking at him properly, just from what he can see of the set of Al's jaw in his peripheral vision, how tense he is.] I don't know, I'm just theorizing. It could have been a newly created one that went horribly wrong. What else can move people through time? [He sighs, shifting the books held to his chest in his arms.] If it were some kind of purgatory, that'd mean that-- we died too, wouldn't it? Can't be that.