3U 8205 then 3U 8122 at Guangzhou
Kunming → Guangzhou → Chongqing
Timetable, Guangzhou time
19:503U 8205 from Kunming at the gate
16:453U 8122 to Chongqing leaves the gate
20 h 55 apart on the timetable, overnight
3U 8122 leaves 20 h 55 after 3U 8205 arrives on the timetable: more than half a day, so not a connection we count.