TR 399 then SQ 736 at Changi
Miri → Singapore → Phuket
Timetable, Singapore time
21:50TR 399 from Miri at the gate
16:10SQ 736 to Phuket leaves the gate
18 h 20 apart on the timetable, overnight
SQ 736 leaves 18 h 20 after TR 399 arrives on the timetable: more than half a day, so not a connection we count.