BA 353 then AI 132 at Heathrow
Nice → London → Bengaluru
Timetable, London time
08:45BA 353 from Nice at the gate
21:05AI 132 to Bengaluru leaves the gate
12 h 20 apart on the timetable
AI 132 leaves 12 h 20 after BA 353 arrives on the timetable: more than half a day, so not a connection we count.