AI 3318 then 6E 656 at Mumbai
Patna → Mumbai → New Delhi
Timetable, Mumbai time
11:15AI 3318 from Patna at the gate
05:006E 656 to New Delhi leaves the gate
17 h 45 apart on the timetable, overnight
6E 656 leaves 17 h 45 after AI 3318 arrives on the timetable: more than half a day, so not a connection we count.