That whole thing with Diggle was awkward as fuck.
Lois: "John Diggle?"
Diggle: "Lois Lane. For contractual reasons, I'm not at all surprised to see you."
Lois: "Obligatory hug for the fans even though we barely know each other?"
Diggle: "Obligatory hug for the fans even though we barely know each other."
Lois: "For what possible reason could you possibly have to come on this show?"
DIggle "McGuffin. My Wife. McGuffin. Your dad."
Lois: "Oh. Sad McGuffin."
Yep. Most Berlanti series are not known for pesky 'ol things like continuity with characters and events, hence the reason Zod's consciousness existed in this series when Supergirl established that Superman killed Zod. Ehhh...but nevermind that..Discount Crisis or whatever. ..and yeah, there's Diggle showing up on Batwoman and Superman and Lois because he has how much of a relationship with the characters...?