6E 1385 then SQ 705 at Bangkok
Chennai → Bangkok → Singapore
Timetable, Bangkok time
10:306E 1385 from Chennai at the gate
09:40SQ 705 to Singapore leaves the gate
23 h 10 apart on the timetable, overnight
SQ 705 leaves 23 h 10 after 6E 1385 arrives on the timetable: more than half a day, so not a connection we count.