AA 2791 then KJ 2811 at LAX
Chicago O'Hare → Los Angeles → Seoul
Timetable, Los Angeles time
13:11AA 2791 from Chicago O'Hare at the gate
10:40KJ 2811 to Seoul leaves the gate
21 h 29 apart on the timetable, overnight
KJ 2811 leaves 21 h 29 after AA 2791 arrives on the timetable: more than half a day, so not a connection we count.