3U 8205 then MF 3149 at Guangzhou
Kunming → Guangzhou → Xi'an
Timetable, Guangzhou time
19:503U 8205 from Kunming at the gate
17:55MF 3149 to Xi'an leaves the gate
22 h 05 apart on the timetable, overnight
MF 3149 leaves 22 h 05 after 3U 8205 arrives on the timetable: more than half a day, so not a connection we count.