AI 2353 then SG 553 at Mumbai
Bangkok → Mumbai → Gorakhpur
Timetable, Mumbai time
17:50AI 2353 from Bangkok at the gate
17:15SG 553 to Gorakhpur leaves the gate
23 h 25 apart on the timetable, overnight
SG 553 leaves 23 h 25 after AI 2353 arrives on the timetable: more than half a day, so not a connection we count.