ZH 9962 then CZ 3871 at Guangzhou
Wenzhou → Guangzhou → Nanjing
Timetable, Guangzhou time
00:10ZH 9962 from Wenzhou at the gate
21:10CZ 3871 to Nanjing leaves the gate
21 h apart on the timetable
CZ 3871 leaves 21 h after ZH 9962 arrives on the timetable: more than half a day, so not a connection we count.