CN 7140 then CA 1277 at Beijing
Harbin → Beijing → Lanzhou
Timetable, Beijing time
21:30CN 7140 from Harbin at the gate
19:45CA 1277 to Lanzhou leaves the gate
22 h 15 apart on the timetable, overnight
CA 1277 leaves 22 h 15 after CN 7140 arrives on the timetable: more than half a day, so not a connection we count.