AA 3104 then AA 1454 at Charlotte
Miami → Charlotte → Las Vegas
Timetable, Charlotte time
16:21AA 3104 from Miami at the gate
16:08AA 1454 to Las Vegas leaves the gate
23 h 47 apart on the timetable, overnight
AA 1454 leaves 23 h 47 after AA 3104 arrives on the timetable: more than half a day, so not a connection we count.