I found this page with a link to a streaming talk by Marcellino d’Ambrosio. Dr. d’Ambrosio often speaks for Catholic Answers, so it ought to be pretty good. I plan to listen soon. The topic is “What Was Vatican II About?”
I’m awaiting for someone to write a book entitled “What Vatican II Really Said.” I hear that Dr. Alan Schreck will be writing a book on this subject that may be out next year. Given that the source was Dr. Schreck himself, I would think it would be reliable.