AA 6434 then UA 4772 at O'Hare
Oklahoma City → Chicago → Columbia Regional
Timetable, Chicago time
16:35AA 6434 from Oklahoma City at the gate
12:45UA 4772 to Columbia Regional leaves the gate
20 h 10 apart on the timetable, overnight
UA 4772 leaves 20 h 10 after AA 6434 arrives on the timetable: more than half a day, so not a connection we count.