My TiVo cut off the last 2 minutes of it. Naturally I’m going to give away the plot but I doubt it’ll matter because it won’t be on again until reruns sometime in spring or summer. And I don’t know how to use the spoiler tags. so
I got to the point where Abraham admitted he really was Homers father then it showed the three of them at Homer’s house and Abe saying something about Homer being happier with M as his father. Then the TiVo cut off. What happened after that? Was it grandpa or M who was driving the second submarine that saved Homer?