Yes for all 3 of those. I recognize the nun later shows up as the Mother Superior from RDR1(notably the Undead Nightmare DLC), did the Pig Farm(I need a shower just thinking about that) and took the guy to the doctors office.I haven’t played the main story in so long. Hopefully you did the Brothers and Sisters mission in chapter four with the nun and kid, because that leads into Of Men and Angels, which has another big narrative payoff involving the Fine Art of Conversation mission that will happen later.
Speaking of random characters, did you visit the Aberdeen pig farm, or bring that one dude to the doctor’s office in Saint Denis?
I was shocked to see him Being hung at a public execution. That was a bit of a twist.