In a new clip from the upcoming October 19 episode of Arrow, Mayor Oliver Queen responds to accusations that he is the Green Arrow by pointing to another DC Universe billionaire hero - Bruce Wayne.
Check it out:
This seems to confirm that a version of Gotham - and possibly Batman - exists in CW's Arrow-verse.
As for what's going on in Fox's Gotham - and whether David Mazouz's young Bruce Wayne may have made a jaunt to Star City - the show offered a response of its own, with the official Twitter account saying "Bruce Wayne was still in Gotham last time we checked."
Arrow airs Thursday nights on CW.