This was originally to air as episode 20 of Season 6.
This was the first season premiere that Tom Cavanagh had appeared in since "The Man Who Saved Central City".
Chester P. Runk replaces Ralph Dibny in the title sequence. It's also slowed to include Allegra Garcia and Eva McCulloch.
This was originally supposed to air on February 23, 2021 following Pilot (2021). However, because of Superman and Lois: Legacy of Hope (2021), "All's Wells That Ends Wells" was postponed to March 2, 2021.