AA 5104 then AA 6018 at Charlotte
South Bend → Charlotte → Knoxville
Timetable, Charlotte time
09:34AA 5104 from South Bend at the gate
09:10AA 6018 to Knoxville leaves the gate
23 h 36 apart on the timetable, overnight
AA 6018 leaves 23 h 36 after AA 5104 arrives on the timetable: more than half a day, so not a connection we count.