> A person has their evening meal and then goes to bed before their meal is digested, does digestion cease with their death?
My understanding is that shortly after death, digestion reverses. ie. the contents of the stomach and intestines soon begins to digest the human tissue around it. The cellular tissue around the digestive system relies on oxygen and nutrients carried around in the blood, and when the blood stops circulating those cells die. That provides food for the microbes and worms in the human gut. These produce gas as a byproduct that leads to bloating.
As a consequence, butchers, taxidermists and embalmers know that for preservation, the gut contents have to be rapidly removed.