BA 135 then AI 2440 at Mumbai
London → Mumbai → New Delhi
Timetable, Mumbai time
05:40BA 135 from London at the gate
18:00AI 2440 to New Delhi leaves the gate
12 h 20 apart on the timetable
AI 2440 leaves 12 h 20 after BA 135 arrives on the timetable: more than half a day, so not a connection we count.