UA 6104 then AA 2809 at O'Hare
South Bend → Chicago → Miami
Timetable, Chicago time
19:00UA 6104 from South Bend at the gate
10:14AA 2809 to Miami leaves the gate
15 h 14 apart on the timetable, overnight
AA 2809 leaves 15 h 14 after UA 6104 arrives on the timetable: more than half a day, so not a connection we count.