AA 5399 then AA 2758 at Charlotte
South Bend → Charlotte → Memphis
Timetable, Charlotte time
08:14AA 5399 from South Bend at the gate
21:00AA 2758 to Memphis leaves the gate
12 h 46 apart on the timetable
AA 2758 leaves 12 h 46 after AA 5399 arrives on the timetable: more than half a day, so not a connection we count.