I guess the goose the loose then?Not completely sure how I feel about ORAS and RSE seemingly being two different parallel universes that split depending on the actions 3000 years ago. I don't think ORAS overriding RSE would have caused more problems than alternative timelines. It just seems a bit too weird, even in-universe.
Assuming it is, I believe that this is a nod to the old R/S/E. The reason for this is, I believe, would be that unlike R/G/B/Y and G/S/C, the R/S/E games can have Pokemon transported over all the way to the games at present.