I am viewing it like this, after a battle where the party is really battered up.
So that be like, completely bruised, many gashes and cuts, muddy, tired, moral low, etc. Just to top it off it starts to rain on them, etc.
They make their way to a ditch where they collapse, covering themselves in a tent. They spend the six-hours mending their wounds, resting, eating, etc.
Things like having their guts sprayed all over the place, well beyond magical means there really is no way to survive that. As such it more likely then not wouldn't happen, now when a person is true and surely dead, it can be from such things as that.