VY 7505 then BA 1402 at Heathrow
Seville → London → Belfast City
Timetable, London time
15:30VY 7505 from Seville at the gate
15:25BA 1402 to Belfast City leaves the gate
23 h 55 apart on the timetable, overnight
BA 1402 leaves 23 h 55 after VY 7505 arrives on the timetable: more than half a day, so not a connection we count.