I think stuff like this happens a lot. My kids' grandparents, mom's parents died 25 days apart. I know it' s not an hour, but the same sort of thing. He dad was miserable in poor health for not quite a decade. Emphysema and wet macular degeneration. But he was from the greatest generation. WWII veteran who was a nose gunner on D-Day. Then in the Air Force in Korea and Vietnam and some other clandestine location. He just made up his mind that he wasn't going to go first. She passed at 91. Less than a month, he went at 93. Terrific man, great father-in-law. Been gone 20 months.
I don't know how much control we have over stuff like that, but surely, we have some. When you spend more than three quarters of your life with somebody, it has to be hard to deal with stuff, especially if your health makes you miserable.
I feel for the Fluties.