AA 3129 then AA 2758 at Charlotte
Jacksonville → Charlotte → Memphis
Timetable, Charlotte time
19:45AA 3129 from Jacksonville at the gate
19:40AA 2758 to Memphis leaves the gate
23 h 55 apart on the timetable, overnight
AA 2758 leaves 23 h 55 after AA 3129 arrives on the timetable: more than half a day, so not a connection we count.