From reading that article, it sounds like the partner doesn't actually highlight specific things you missed, just that you probably missed something.
"I think we missed something" is a lot different from "We need to be sure to check under the victim's fingernails."
It also says "eventually your partner will say..." which makes it sound to me like he won't even necessarily say something before you leave the crime scene, it might be several investigative steps later when it becomes apparent you're missing a piece of the puzzle.