AA 2925 then K4 532 at O'Hare
Boston → Chicago → Seoul
Timetable, Chicago time
21:54AA 2925 from Boston at the gate
12:15K4 532 to Seoul leaves the gate
14 h 21 apart on the timetable, overnight
K4 532 leaves 14 h 21 after AA 2925 arrives on the timetable: more than half a day, so not a connection we count.