KE 792 then CZ 6074 at Incheon
Fukuoka → Seoul → Yanji
Timetable, Seoul time
15:10KE 792 from Fukuoka at the gate
14:35CZ 6074 to Yanji leaves the gate
23 h 25 apart on the timetable, overnight
CZ 6074 leaves 23 h 25 after KE 792 arrives on the timetable: more than half a day, so not a connection we count.