Board Thread:General Discussion/@comment-5536445-20190520021531/@comment-5536445-20191209055858

Or it could very well be set in-between Seasons 1 and 2. I dunno, they know the show's still going on, so I doubt they would go to the troubles of using the footage (or possibly having them shoot actual scenes) only for them to make it an alternate timeline.

But anyway, tis a day to rejoice. Titans is part of the Arrowverse. Hooray!