OM 223 then KE 864 at Beijing
Ulaanbaatar → Beijing → Seoul Incheon
Timetable, Beijing time
10:30OM 223 from Ulaanbaatar at the gate
01:30KE 864 to Seoul Incheon leaves the gate
15 h apart on the timetable, overnight
KE 864 leaves 15 h after OM 223 arrives on the timetable: more than half a day, so not a connection we count.