PJ... I think the part that you might have missinterpreted is that your eyes aren't necessarily over the line formed by the edges of the CB/OB (Unless they are thin cuts to either side) The eyes go over the line of the shot, whether it be through the center of the cue ball to a portion of the OB, or their respective edges.
That's what I expected the video to say, so I was looking for it, but it's pretty specific about using the CB's edge - this is one of the omissions I disliked. I think you must be inferring somehow, but I can see how that's possible - frankly, the discussions about this stuff here on AZB have been more complete, reviewing all the various possibilities. Gene is very emphatic on the video that his chosen way is the only way and all other ways are bogus - that's another thing I disliked.
pj
chgo