I’d also like a lot more explanation, but I’m happy in taking solace that at least this jump isn’t between our world and Wish Realm or anything, but between two magical realms.
The thing that doesn’t make sense to me, is I thought the Wish Realm did not exist until Emma wished it into existence? Wasn’t that stated somewhere? If that is true the wish realm should not be in existence at this time, right? I don’t know it is all way to convoluted for me now and I totally forgot that Alice and Emma where basically the same age in wish realm timeline but does that only count as Nook as he can travel back and forth to the wish realm? Anyway I think it was an incredibly bad idea to bring the wish realm back at all, it complicates a lot of story lines at least it should.