TG 107 then UB 20 at Bangkok
Chiang Mai → Bangkok → Yangon
Timetable, Bangkok time
15:25TG 107 from Chiang Mai at the gate
09:25UB 20 to Yangon leaves the gate
18 h apart on the timetable, overnight
UB 20 leaves 18 h after TG 107 arrives on the timetable: more than half a day, so not a connection we count.