UB 19 then TG 4 at Bangkok
Yangon → Bangkok → Udon Thani
Timetable, Bangkok time
16:20UB 19 from Yangon at the gate
12:30TG 4 to Udon Thani leaves the gate
20 h 10 apart on the timetable, overnight
TG 4 leaves 20 h 10 after UB 19 arrives on the timetable: more than half a day, so not a connection we count.