AA 5564 then AA 1454 at Charlotte
Harrisburg → Charlotte → Las Vegas
Timetable, Charlotte time
18:46AA 5564 from Harrisburg at the gate
16:08AA 1454 to Las Vegas leaves the gate
21 h 22 apart on the timetable, overnight
AA 1454 leaves 21 h 22 after AA 5564 arrives on the timetable: more than half a day, so not a connection we count.