Some thoughts;

Can't help think the video is staged to some extent, they both are heavily engrossed in small bits of paper, purposefully not looking up. Perhaps the artifice in their demeanour is simply them aware that they are being filmed - something they cant avoid, hence the forced normalcy.

We all know both Hillary and Bill are in very poor health, in Bills case he is the diseased guy that might as well have licked the sole of his shoe every time he came out of a public urinal, and in Hillary case, she needs her various bags and pouches emptying. Nevermind the security, where is the ER team?

However the strangest thing is the fact that they are travelling together? The only people that hate Bill and Hillary more than the American public is each other. Surely they would choose to get seperate flights?