Sticking with GJohn vs. interpretive traditions, do you see a man's will involved in coming to Jesus? FWIW, this is a decent translation and "not willing" is the same word typically found in the Text to speak of the will of God and of men.
NKJ John 5:40 "But you are not willing to come to Me that you may have life.
BTW, I was just going through 6:44-47 in detail again and then in big steps through the end of the chapter. I came to see more clearly than I had how important 6:46 is in the flow of what Jesus is saying. It strengthens my current view of Come + Faith vs. Come = Faith which I used to think was correct.
I'm also laughing in appreciation of how Jesus is both shoring up the believing in Him requirement while also setting up and then handling the Judeans in 6:48 on.
Such a great chapter!