Quoted By:
I guess my headcanon was a too simple, I don't know. I figured "..Hoenn tegion that's almost exactly like this one we live in..." was meant to mean the counterpart game. In other words, if you play OR she references AS and vice versa. Alternatively, since she also mentions a world where mega evolution is unknown, her dialogue was simply a nod to Ruby, Sapphire, and Emerald.
I had no idea people actually thought there was some Zelda level Doctor Who shit going on with timelines and alternate realities.