Board Thread:Arrow discussions/@comment-9346948-20181211010912/@comment-27700324-20181211175423

Eladkse wrote: Xandermcc wrote: We'll see hopefully. John's interview means nothing until it is confirmed in an episode. After all, Melissa Benoist said Batwoman was going to be on Earth Thirty Eight and that ended up being wrong. How could it be confirmed within an episode? Unless he turns to camera and goes "You remember that 90s Flash show I starred in? I'm playing the same guy!", you'll almost certainly not get one.

NBC's Constantine in-universe status was similarly confirmed by Word of God. If it required in-universe confirmation, then by the same logic, the Earth-1 John Constantine that appears in Arrow and Legends could not be associated with the NBC character, despite having an identical look and appearance.

I agree another source is needed - ideally from the production team or similar - but should not need to rely on an in-universe confirmation. I meant references to his show like his battles against the classic Trickster, Leonard Wynters, and lastly his relationship to Dr. Tina McGee instead of Iris West.