AA 4504 then UA 3014 at O'Hare
South Bend → Chicago → Los Angeles
Timetable, Chicago time
18:35AA 4504 from South Bend at the gate
15:00UA 3014 to Los Angeles leaves the gate
20 h 25 apart on the timetable, overnight
UA 3014 leaves 20 h 25 after AA 4504 arrives on the timetable: more than half a day, so not a connection we count.