I don't think he learned that much. I think Loma learned how to deal with nut shots 1)Throw them back and 2) Complain vociferously to the referee. The third thing he learned was that the amateur honour code does not exist in the pro game and people can get away with excessive fouling to unbelievable extents. That didn't take much time to learn, it was more about Lomachenkos approach to the pro game that really needed to change. He needed to drop the honourable amateur boxer ethos and become a pro boxer who's willing to get dirty and complain.