Watching the above video, I was drawn to another video in the suggestions with a title that would normally not even make me consider watching it due to the clickbait potential but I was drawn to it anyway. It gives some interesting confirmations.

It's a 50m video and you could skip his personal what-went-before story, then skip through to about 18:45 but I would suggest watching it from the beginning to get a sense of the person and whether this video is for you.

https://www.youtube.com/watch?v=25LUF8GmbFU