AA 1794 then AA 5389 at Charlotte
Nashville → Charlotte → South Bend
Timetable, Charlotte time
09:02AA 1794 from Nashville at the gate
08:40AA 5389 to South Bend leaves the gate
23 h 38 apart on the timetable, overnight
AA 5389 leaves 23 h 38 after AA 1794 arrives on the timetable: more than half a day, so not a connection we count.