So idk who to reply to on the Otona town-setting discussion that I skimmed through above but I think it's worth mentioning that in the first All-Stars feature-length movie that featured Fresh and the the first three teams, the first three teams visited each other's towns and that's how they got to know each other so at least in that movie their universes are in the same place. It's the first All-Stars movie so they probably didn't plan on Precure becoming a mega-franchise especially with the context of the interview that mentioned Precure would have been discontinued if Fresh wasn't received well. Personally when it comes to universes and crossovers I'm just hyped to see my girls interacting with each other.