9C 6726 then ZH 8909 at Guangzhou
Ningbo → Guangzhou → Yangzhou
Timetable, Guangzhou time
22:159C 6726 from Ningbo at the gate
17:50ZH 8909 to Yangzhou leaves the gate
19 h 35 apart on the timetable, overnight
ZH 8909 leaves 19 h 35 after 9C 6726 arrives on the timetable: more than half a day, so not a connection we count.