CA 1650 then HU 7297 at Beijing
Changchun → Beijing → Lanzhou
Timetable, Beijing time
18:10CA 1650 from Changchun at the gate
15:45HU 7297 to Lanzhou leaves the gate
21 h 35 apart on the timetable, overnight
HU 7297 leaves 21 h 35 after CA 1650 arrives on the timetable: more than half a day, so not a connection we count.