So I'd be shocked if someone hasn't mentioned this yet somewhere, but having recently finished Twin Peaks: The Return and having some time to process it all, I'm starting to think that the Fireman's home dimension might be the same world Eraserhead takes place in. Obviously both are shot in black and white, but they've also got a similar weird logic to them. Everything's quiet and eerie, and a lot of what happens in both realms is incredibly vague and supernatural. I could be reading too deep into it, but idk, I thought it might be interesting to share.