Then this becomes one of those gray areas. I would suspect they are fine, but, a lot depends on how comfortable you are with the risk. 8 hours in a non-heated cambro, even if foiled, is on the long end of keeping the heat up enough. Then again, it was fully cooked and it is likely that nothing went wrong.
I'm feeling bearish, and I'm packing a Wusthof Grand Brisket slicer from MABA
Whip It Off, Chambers!
"perhaps...but then again...maybe not..."