UA 4554 then K4 532 at O'Hare
Richmond → Chicago → Seoul
Timetable, Chicago time
09:33UA 4554 from Richmond at the gate
06:30K4 532 to Seoul leaves the gate
20 h 57 apart on the timetable, overnight
K4 532 leaves 20 h 57 after UA 4554 arrives on the timetable: more than half a day, so not a connection we count.