6E 1385 then TG 42 at Bangkok
Chennai → Bangkok → Khon Kaen
Timetable, Bangkok time
10:306E 1385 from Chennai at the gate
10:25TG 42 to Khon Kaen leaves the gate
23 h 55 apart on the timetable, overnight
TG 42 leaves 23 h 55 after 6E 1385 arrives on the timetable: more than half a day, so not a connection we count.