UA 594 then K4 532 at O'Hare
Rochester (ROC) → Chicago → Seoul
Timetable, Chicago time
07:30UA 594 from Rochester (ROC) at the gate
06:30K4 532 to Seoul leaves the gate
23 h apart on the timetable, overnight
K4 532 leaves 23 h after UA 594 arrives on the timetable: more than half a day, so not a connection we count.