AA 5991 then AA 5389 at Charlotte
Augusta → Charlotte → South Bend
Timetable, Charlotte time
09:06AA 5991 from Augusta at the gate
08:40AA 5389 to South Bend leaves the gate
23 h 34 apart on the timetable, overnight
AA 5389 leaves 23 h 34 after AA 5991 arrives on the timetable: more than half a day, so not a connection we count.