I'm not a fan of Taylor Marshall, and it was annoying that in this talk he kept plugging his book. He's also a fan of Opus Dei, or at least he said he was in 2014; so I don't trust his motives.
I just wanted to see what Vigano had said in this particular installment, and was interested to hear that he used the term, "Lefebvrian," not long after the 18:30 minute mark. The term was used in context of how the progressives view those who don't agree with them, and as such try to place them in a position of inferiority, and unworthy of attention or response.
I think it likely that Vigano has read books by +ABL, but there's not any proof of that. At least we now know that he has heard of +ABL.