6E 1385 then PG 275 at Bangkok
Chennai → Bangkok → Phuket
Timetable, Bangkok time
10:306E 1385 from Chennai at the gate
10:25PG 275 to Phuket leaves the gate
23 h 55 apart on the timetable, overnight
PG 275 leaves 23 h 55 after 6E 1385 arrives on the timetable: more than half a day, so not a connection we count.