I had a beautiful brisket on my egg, went to bed with a temp alarm set and grill chugging along at 205f. Meat was around 130f at that time. Woke upto a warm egg and brisket. No idea if it got up to 160f and came back down or what happened. I do know that the alarm didn't go off or didn't wake me! Whatcha think? The egg was still warm and coals barely lit when I woke up, it didn't go completely out just almost out.