WHAT IS THAT BACK BULGE? HILLARY BUNDLES UP LIKE AN ESKIMO!

Looks like might be an oxygen generator or small tank on her back and perhaps an oxygen tube into her neck hence the scarf around her neck. Or pump for medications directly into a neck vein? Bill holds his mouth open slackly a lot, like many elderly frail people that are losing awareness about what's really going on around them. Both are on their way out. Too much illicit dangerous sex, and drugs?