9C 6726 then ZH 9225 at Guangzhou
Ningbo → Guangzhou → Xi'an
Timetable, Guangzhou time
22:159C 6726 from Ningbo at the gate
21:05ZH 9225 to Xi'an leaves the gate
22 h 50 apart on the timetable, overnight
ZH 9225 leaves 22 h 50 after 9C 6726 arrives on the timetable: more than half a day, so not a connection we count.