Official press release from DC/WB states Doom Patrol takes place following their episode in Titans.
Doom Patrol, the highly anticipated TV series based on the acclaimed, notoriously weird comic series, is set to debut on February 15th. Yet, we still haven’t seen much from it.
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Show runner has also said:
"They're in the same world. We're asking fans to come to this version of the show knowing that it is the same world, but it's a different continuity. While there are elements of Titans and the show's introduction of our team, not all characterizations are the same and it's best just to come into it with a fresh look."
If you watched the first season of Titans, you probably think you know the Doom Patrol.
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Not to mention that episode 2 has references to the Krypto/Superboy ending for Titans season 1 and the death of Melissa Roth from that shows first episode.
Swamp Thing and Stargirl are more in the air. Swamp Thing team has said it COULD coexist, but that they werent concerned with that. My guess is it may be brought back in later like how Constantine was to the Arrowverse. Stargirl set reportedly had a Rita Farr poster, and the DCU Easter eggs blogs suggests there may have been a Stargirl reference in Doom Patrol so there's potential, but no confirmation.
On a seperate note, I've been working on a timeline video for Watchtower Database on both shows, and one of the last things I've gotta pin down is the flashback from Danny the Street. I see here that its marked 2009, but after watching the episode multiple times I've seen nothing that pins it there. Is there a reason for this date?