There's so much here. The two are almost always seen together. Michael's late wife was super religious and so is Pieter. Michael goes to church with Pieter despite not believing in God. They do surgeries together. If I recall correctly they were once forced to play chess to the death against one another. They make me insane.
mae saved linda from eternal damnation at the hands of her demon boyfriend and his cult and they fused into one body & soul. they are called the two who are one. when linda comes out to her parents as supergirl they think she’s coming out as gay. mae believes she needs linda to be whole, to be human— and linda believes that everything good she ever did came from mae. in supergirl: wings, mae says ‘yes, we are what i’ve revealed to you here, but on a thousand other levels, on a thousand other planes of reality— we are so much more. why, linda, why do you resist me?’ while kissing a sleeping linda on the cheek. they’re deeply codependent