6E 1385 then 6E 1086 at Bangkok
Chennai → Bangkok → Guwahati
Timetable, Bangkok time
10:306E 1385 from Chennai at the gate
08:506E 1086 to Guwahati leaves the gate
22 h 20 apart on the timetable, overnight
6E 1086 leaves 22 h 20 after 6E 1385 arrives on the timetable: more than half a day, so not a connection we count.