3U 8205 then 8M 712 at Guangzhou
Kunming → Guangzhou → Yangon
Timetable, Guangzhou time
19:503U 8205 from Kunming at the gate
14:158M 712 to Yangon leaves the gate
18 h 25 apart on the timetable, overnight
8M 712 leaves 18 h 25 after 3U 8205 arrives on the timetable: more than half a day, so not a connection we count.