AM 90 then LJ 395 at Incheon
Monterrey → Seoul → Naha
Timetable, Seoul time
14:15AM 90 from Monterrey at the gate
10:10LJ 395 to Naha leaves the gate
19 h 55 apart on the timetable, overnight
LJ 395 leaves 19 h 55 after AM 90 arrives on the timetable: more than half a day, so not a connection we count.