UA 5570 then K4 532 at O'Hare
Harrisburg → Chicago → Seoul
Timetable, Chicago time
07:50UA 5570 from Harrisburg at the gate
06:30K4 532 to Seoul leaves the gate
22 h 40 apart on the timetable, overnight
K4 532 leaves 22 h 40 after UA 5570 arrives on the timetable: more than half a day, so not a connection we count.