AA 5984 then AA 3686 at Charlotte
Florence → Charlotte → Greensboro
Timetable, Charlotte time
16:44AA 5984 from Florence at the gate
16:25AA 3686 to Greensboro leaves the gate
23 h 41 apart on the timetable, overnight
AA 3686 leaves 23 h 41 after AA 5984 arrives on the timetable: more than half a day, so not a connection we count.