AA 1979 then KJ 281 at LAX
Chicago O'Hare → Los Angeles → Seoul
Timetable, Los Angeles time
08:22AA 1979 from Chicago O'Hare at the gate
21:05KJ 281 to Seoul leaves the gate
12 h 43 apart on the timetable
KJ 281 leaves 12 h 43 after AA 1979 arrives on the timetable: more than half a day, so not a connection we count.