I'm p sure there's no evidence the two Dads are related. besides the fact they look identical, I guess, but they are kinda just outlines with a pipe and hat so does it count? idk I could be wrong

Well, they’re kinda related.

Nanna and Jane have the same DNA.

Dad Egbert is Nanna’s son

and Dad Crocker, genetically, is Jane’s grandson.

So, Dad Egbert is kinda Dad Crocker’s uncle.

~Mod T