Did you catch this in Justice League: The Flashpoint Paradox? The DC animated film was released in 2013. Similar to The Flash, it featured the big crossover event into manageable chunks and mostly concentrated on Barry's emotional journey. It somehow finds time to include Batman, Superman, Wonder Woman, Aquaman, and many other superheroes, unlike The Flash. The two movies have contrasting references and a few beats in common, so the symbiotic titles seem appropriate. For instance, The Rival and The Flash's climactic fight on Williamson Street. This is probably a hint to Joshua Williamson, the current writer of The Flash comics.
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