I was taught BARK (buckles, anchor, rap device, knot) for rappelling.There was a reddit thread, and apparently it was a catalogue of small things that just added up to the accident. simul rappel with no knot, and not starting from the middle. And the rope getting caught in a bush and not realising how much more length there was. Shame.
These checks may seem dumb or uncool or whatever but it's your life on the line. Had they gone through this they wouldve at least had knotted ends.