I know that some will dismiss Gary Byrne and his insight as hopelessly partisan because he's written a book that slams Hillary. Fair enough to take that into account if you want, although you should consider the possibility that Byrne's motivation in writing the book was not necessarily partisan but rather based on genuine concern because he knows things the rest of us don't.
Whatever. You should consider the insight he offers here about what was happening during that brief video in which Hillary collapsed getting into the van on 9/11. What he's sharing about Secret Service procedure and protocol seems easy enough to check, and if his telling is accurate, it offers a whole different insight than what you're getting from anyone else. I'm including his images in the excerpt because it's harder to get the gist of what he's saying without them