AA 9799 then K4 602 at O'Hare
New York JFK → Chicago → Seoul
Timetable, Chicago time
16:51AA 9799 from New York JFK at the gate
05:15K4 602 to Seoul leaves the gate
12 h 24 apart on the timetable, overnight
K4 602 leaves 12 h 24 after AA 9799 arrives on the timetable: more than half a day, so not a connection we count.