AA 4504 then UA 4512 at O'Hare
South Bend → Chicago → Little Rock
Timetable, Chicago time
18:35AA 4504 from South Bend at the gate
08:45UA 4512 to Little Rock leaves the gate
14 h 10 apart on the timetable, overnight
UA 4512 leaves 14 h 10 after AA 4504 arrives on the timetable: more than half a day, so not a connection we count.