BA 349 then AI 112 at Heathrow
Nice → London → New Delhi
Timetable, London time
21:05BA 349 from Nice at the gate
13:00AI 112 to New Delhi leaves the gate
15 h 55 apart on the timetable, overnight
AI 112 leaves 15 h 55 after BA 349 arrives on the timetable: more than half a day, so not a connection we count.