User blog comment:Curtis712120/Earth-3/@comment-28458080-20160623042720/@comment-27700324-20160628214317

He probably did team-up with him, we didn't see his personal life in the finale. I just feel that we shouldn't make assumtions that just because a superhero exists on one Earth, it's seperate from another that doesn't have a name. Besides, how else is Supergirl supposed to get to the Arrowverse?