My opinion, because you aged it it had less water in the meat, thus cooked faster and maybe didn’t stall as most do.Point, flat, beats me, I don't know the difference. It was about 2" or so thick, weighed bout 4 lbs and I cooked it at 225. Wrapped it in foil with broth at 160 and cooked to 205, well...up to 209 as it rested. I had aged it in the refrigerator for a few days and injected it with broth before cooking.