SQ 505 then SQ 740 at Changi
Ahmedabad → Singapore → Phuket
Timetable, Singapore time
21:10SQ 505 from Ahmedabad at the gate
18:35SQ 740 to Phuket leaves the gate
21 h 25 apart on the timetable, overnight
SQ 740 leaves 21 h 25 after SQ 505 arrives on the timetable: more than half a day, so not a connection we count.