AA 4293 then UA 3874 at O'Hare
Columbia Metropolitan → Chicago → LCQ
Timetable, Chicago time
07:33AA 4293 from Columbia Metropolitan at the gate
06:30UA 3874 to LCQ leaves the gate
22 h 57 apart on the timetable, overnight
UA 3874 leaves 22 h 57 after AA 4293 arrives on the timetable: more than half a day, so not a connection we count.