3U 8103 then OM 224 at Beijing
Chongqing → Beijing → Ulaanbaatar
Timetable, Beijing time
15:353U 8103 from Chongqing at the gate
11:30OM 224 to Ulaanbaatar leaves the gate
19 h 55 apart on the timetable, overnight
OM 224 leaves 19 h 55 after 3U 8103 arrives on the timetable: more than half a day, so not a connection we count.