It is unlikely for a number of reasons. But I also cannot discount the possibility entirely. That this is some place that has never been found, somehow, in the world I come from. Hidden away by beings we've yet to see or hear about. Even if it is, though.

I know for a fact that two of us from a world with Pokémon come from different times. [ and he hopes it's only that. because if it isn't ... ] So if this really is the same place, at least one of us has been derailed.

But I am thinking that it is more likely that we all have been.