M0 601 then KE 713 at Incheon
Ulaanbaatar → Seoul → Tokyo Narita
Timetable, Seoul time
19:30M0 601 from Ulaanbaatar at the gate
16:55KE 713 to Tokyo Narita leaves the gate
21 h 25 apart on the timetable, overnight
KE 713 leaves 21 h 25 after M0 601 arrives on the timetable: more than half a day, so not a connection we count.