BA 851 then AI 132 at Heathrow
Warsaw → London → Bengaluru
Timetable, London time
09:00BA 851 from Warsaw at the gate
21:05AI 132 to Bengaluru leaves the gate
12 h 05 apart on the timetable
AI 132 leaves 12 h 05 after BA 851 arrives on the timetable: more than half a day, so not a connection we count.