F9 1342 then K4 532 at O'Hare
Dallas-Fort Worth → Chicago → Seoul
Timetable, Chicago time
09:24F9 1342 from Dallas-Fort Worth at the gate
06:30K4 532 to Seoul leaves the gate
21 h 06 apart on the timetable, overnight
K4 532 leaves 21 h 06 after F9 1342 arrives on the timetable: more than half a day, so not a connection we count.