He took them off their ventilators at or near the same time. They died 6 minutes apart. Not exactly a random act of nature.
He must have been convinced by the docs that they could not turn it around.
https://abcnews.go.com/GMA/News/nfl-agent-buddy-baker-parents-died-covid-19/story?id=69916796
He signed papers transferring his parents to hospice care. That means removal of external supports. When my wife decided on hospice it meant she stopped all chemo for her cancer. This is no diffrrent.
God bless them...