Right behind you

Understandable, but I really don't see the point in forming a 'headcanon' around this when the creators have made it clear that it is canon. You don't form a headcanon around whether or not Bruce Wayne is Batman, that's all I'm saying. Plus, it's best to go with the less complex explanation.Which is easier to comprehend?A: "There's another dimension with human versions of characters from Equestria."B: "There's an alternate timeline in the main series where Twilight Sparkle goes to another dimension with human versions of characters from Equestria."