UA 1285 then K4 532 at O'Hare
Columbus (Ohio) → Chicago → Seoul
Timetable, Chicago time
07:34UA 1285 from Columbus (Ohio) at the gate
06:30K4 532 to Seoul leaves the gate
22 h 56 apart on the timetable, overnight
K4 532 leaves 22 h 56 after UA 1285 arrives on the timetable: more than half a day, so not a connection we count.