Board Thread:General Discussion/@comment-28109177-20191019215333/@comment-3030984-20191209130313

We had this same discussion last year regarding 90s Flash. To quote my previous self:

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.