Board Thread:News and Announcements/@comment-807326-20160413053948/@comment-807326-20160414043650

At its very base, this was a Supergirl episode that featured The Flash. While The Flash was from our "world", so to speak, that was the only element of ours that crossed over. Due to this, we're not including anything else from that "world" (a term which I use loosely), like Kara Danvers or Winn Schott or anything else. As with pages like "Multiverse", it's a general page and so it makes sense to include Supergirl on it as a general point.

While we've made this decision and it is final for now, hypothetically yes we could merge in the future, but that's probably only really likely to happen if we continuously get crossover after crossover. While Earth One and Earth Two are heavily linked as part of the Arrowverse, for all intents and purposes "Earth Supergirl" is its own thing, which just happened to include Barry this once. Additionally, it stands to reason that we should include the episode page on our wiki as it was an actual crossover, despite it being dimensional.