RS 116 then M0 602 at Incheon
Nha Trang → Seoul → Ulaanbaatar
Timetable, Seoul time
07:25RS 116 from Nha Trang at the gate
20:30M0 602 to Ulaanbaatar leaves the gate
13 h 05 apart on the timetable
M0 602 leaves 13 h 05 after RS 116 arrives on the timetable: more than half a day, so not a connection we count.