AA 3391 then AA 1454 at Charlotte
Hilton Head → Charlotte → Las Vegas
Timetable, Charlotte time
17:40AA 3391 from Hilton Head at the gate
16:08AA 1454 to Las Vegas leaves the gate
22 h 28 apart on the timetable, overnight
AA 1454 leaves 22 h 28 after AA 3391 arrives on the timetable: more than half a day, so not a connection we count.