By FDA Food Code Cooked food, ready to eat, can be on a serving line, with or without heat, up to 4 hours exposed to air. Yes, like a Buffet or Sandwiches in Grab and Go displays. In the above situation, the meat was in a Closed Smoker. It would take some pretty Determined Bacteria to get in that Hot Smoker, even after 2 hours still 95, on to the likely even Hotter Meat, on the dry Salty Surface and multiply to any dangerous level. Its just not that likely. Bacteria need Perfect growing conditions, raw Chicken at room temp, to grow rapidly. And even with raw chicken Food Code allows 2 hours at room temp to prep.
Kudos as you are thinking along the right track...JJ