B6 423 then KJ 2811 at LAX
New York JFK → Los Angeles → Seoul
Timetable, Los Angeles time
14:16B6 423 from New York JFK at the gate
10:40KJ 2811 to Seoul leaves the gate
20 h 24 apart on the timetable, overnight
KJ 2811 leaves 20 h 24 after B6 423 arrives on the timetable: more than half a day, so not a connection we count.