Originally Posted by Dr Tactics
But you'd hope he'd at least be seeing somebody by the sequel so he could plausibly have a Love Child (or twins) so they can have the Maury Moment. "YOU ARE THE FATHER"
I think he could have fathered children in the time since Auschwitz and when we next saw him in Vienna in 1961/1962. A reference to a lover, or even specifically to Magda, would be enough.