>>56296774Are you referring to how Sycamore traveled from Sinnoh to Kalos via a train? If so, then just consider that there is also a train which can take one from England to France and from France to Spain. Just because two countries share a landmass and can be accessed without crossing an ocean doesn't stop them from being different countries.
If that's not what you're talking about then I'm not sure what you mean.