Board Thread:General Discussion/@comment-26260713-20191209222945/@comment-43538374-20191210222707

IHHeroes wrote: Please refer to this post. For now, nothing has been confirmed in-universe. You only have outside sources telling you they are the same character. But out of universe information counts. For example, a producer confirmed that Constantine was being retroactively linked to the Arrowverse and then all the information on that show was added.