Here’s a quote from that article, which is a summary of a more in-depth study. This quote is the summary after a lot of checking:
“Bush explained that sometimes you can die in your sleep during a massive stroke or a ruptured aneurysm. But in those cases, a person usually will have complained earlier about symptoms like a headache or other pain. A heart attack or pulmonary embolism usually will cause enough pain to lead the person to wake and go to an emergency room.
But death during sleep with no symptoms at all is likely due to the heartbeat going haywire. In Bush’s opinion, it is the way to go.
Peaceful? She thinks so.
Sometimes, she said, such a person will be curled up in a sleeping position, the blankets tucked around them, no evidence of thrashing about. Their faces are serene, their eyes closed. By contrast, in cases where death comes while not sleeping, there’s a 50-50 chance the eyes will be open.”
So what? You have said nothing that changes a findhibg of natural causes.