Board Thread:The Flash discussions/@comment-9346948-20160323000422/@comment-27178728-20160323233239

For the Supergirl crossover, I think when Barry would go on E-2 to find Zoom, he will lost himself in the Speed Force and land in Supergirl by mistake.

Because the synopsis says: "Kara gains a new ally when the lightning-fast superhero The Flash  suddenly  appears from an alternate universe"