Earlier this week, we learned that plans were being put in place for The Flash to appear on Supergirl if CBS orders an additional nine episodes. Well, Bleeding Cool has now added to that the crossover is deemed as a requirement if the series gets those extra episodes. That apparently has something to do with it being,How does The Flash get involved with that? It has to have something to do with alternate timelines and realities, right?!Here's the bad news. The site is backtracking a little on their report about Matt Ryan's Constantine becoming part of Legends of Tomorrow's second season, revealing that,That's very interesting, and the prospect of an entirely different series taking Legends of Tomorrow's place is in many ways more exciting than them stretching out that premise a little too far. What do you guys think?