AA 4998 then UA 4772 at O'Hare
Albany (New York) → Chicago → Columbia Regional
Timetable, Chicago time
13:33AA 4998 from Albany (New York) at the gate
12:45UA 4772 to Columbia Regional leaves the gate
23 h 12 apart on the timetable, overnight
UA 4772 leaves 23 h 12 after AA 4998 arrives on the timetable: more than half a day, so not a connection we count.