Still trapped in each other's bodies, Oliver and Barry head to Gotham City with Supergirl to find out why their reality changed and cross paths with the mysterious Kate Kane.
Did You Know?
Kate Kane is named after the co-creator of Batman, Bob Kane. See more
While it certainly may have been unconsidered of the group to ignore Cisco's vital part in them knowing about the book that Oliver drew in their discussion about it, as it was based on Cisco's vibe in the first place, that alone can't be categorized as a "Goof" by any stretch. The important part in that discussion wasn't so much how they came to this knowledge, but rather how that would help them. See more
Who's this badass?
Elseworlds Green Arrow
That's... not Batman.
Kate Kane told you get out of Gotham. You should have listened to her.