VS 317 then BA 1398 at Heathrow
Bengaluru → London → Belfast City
Timetable, London time
10:40VS 317 from Bengaluru at the gate
10:05BA 1398 to Belfast City leaves the gate
23 h 25 apart on the timetable, overnight
BA 1398 leaves 23 h 25 after VS 317 arrives on the timetable: more than half a day, so not a connection we count.