UA 6104 then AA 4583 at O'Hare
South Bend → Chicago → Raleigh-Durham
Timetable, Chicago time
19:00UA 6104 from South Bend at the gate
10:05AA 4583 to Raleigh-Durham leaves the gate
15 h 05 apart on the timetable, overnight
AA 4583 leaves 15 h 05 after UA 6104 arrives on the timetable: more than half a day, so not a connection we count.