9C 6726 then 3U 1077 at Guangzhou
Ningbo → Guangzhou → Xi'an
Timetable, Guangzhou time
22:159C 6726 from Ningbo at the gate
19:153U 1077 to Xi'an leaves the gatealso CZ 3231
21 h apart on the timetable, overnight
3U 1077 leaves 21 h after 9C 6726 arrives on the timetable: more than half a day, so not a connection we count.