AA 1782 then UA 4550 at O'Hare
Orlando → Chicago → Columbia Regional
Timetable, Chicago time
19:50AA 1782 from Orlando at the gate
19:45UA 4550 to Columbia Regional leaves the gate
23 h 55 apart on the timetable, overnight
UA 4550 leaves 23 h 55 after AA 1782 arrives on the timetable: more than half a day, so not a connection we count.