Was it ever truly confirmed the Flash’s Batman was the actual Burtonverse Batman or just another version of a Keaton Batman from a similar but different universe? Big difference. The TV show flash had multiple alternate versions of characters played by the same actor. Same with Dr. Strange. Some universes have different actors like the Spider-Man’s and others are the same. I personally wouldn’t say the Flash concluded the Burtonverse - especially if Burton has the itch to come back after doing Beetlejuice Beetlejuice with Michael Keaton recently.