AI 2492 then 6E 843 at Mumbai
Lucknow → Mumbai → Guwahati
Timetable, Mumbai time
18:55AI 2492 from Lucknow at the gate
18:306E 843 to Guwahati leaves the gate
23 h 35 apart on the timetable, overnight
6E 843 leaves 23 h 35 after AI 2492 arrives on the timetable: more than half a day, so not a connection we count.