9C 8680 then CZ 8720 at Guangzhou
Shijiazhuang → Guangzhou → Harbin
Timetable, Guangzhou time
20:559C 8680 from Shijiazhuang at the gate
20:45CZ 8720 to Harbin leaves the gate
23 h 50 apart on the timetable, overnight
CZ 8720 leaves 23 h 50 after 9C 8680 arrives on the timetable: more than half a day, so not a connection we count.