BA 1349 then BA 119 at Heathrow
Saint Helier → London → Bengaluru
Timetable, London time
16:20BA 1349 from Saint Helier at the gate
13:40BA 119 to Bengaluru leaves the gate
21 h 20 apart on the timetable, overnight
BA 119 leaves 21 h 20 after BA 1349 arrives on the timetable: more than half a day, so not a connection we count.