AA 2366 then AA 1454 at Charlotte
Denver → Charlotte → Las Vegas
Timetable, Charlotte time
05:07AA 2366 from Denver at the gate
17:09AA 1454 to Las Vegas leaves the gate
12 h 02 apart on the timetable
AA 1454 leaves 12 h 02 after AA 2366 arrives on the timetable: more than half a day, so not a connection we count.