AA 4504 then UA 6079 at O'Hare
South Bend → Chicago → Joplin
Timetable, Chicago time
18:35AA 4504 from South Bend at the gate
07:59UA 6079 to Joplin leaves the gate
13 h 24 apart on the timetable, overnight
UA 6079 leaves 13 h 24 after AA 4504 arrives on the timetable: more than half a day, so not a connection we count.