Well, they're agreed on the former point at least.

"Stan has a brother?" That's news. God but Alex feels sorry for that family. It hasn't really occurred to him that Alex might be the truly difficult one in this situation. "Jeez. Wonderland must really dig the location."

Or he'd assume so, given that they're apparently in Gravity Falls right now. It's not helping Alex's case that the thing tailing him has elected to stay pretty silent, which just makes him seem aggressively paranoid.