I believe it was mentioned in comments those two would be back, and conservation of characters said they would have something to do with Lyn and his coming out process. So no huge surprise. Fun though, and could have been more explicit. Only Alexander gets the detailed play by plays? The overstimulation mention was interesting. Combined with Lyns tight focus, and tendency to miss obvious social cues from his friends, he is reading as having a little neurological diversity. Mild, but helps explain how he could have missed social cues that look obvious to the readers.