BA 1391 then BA 470 at Heathrow
Belfast City → London → Palma de Mallorca
Timetable, London time
10:00BA 1391 from Belfast City at the gate
08:00BA 470 to Palma de Mallorca leaves the gate
22 h apart on the timetable, overnight
BA 470 leaves 22 h after BA 1391 arrives on the timetable: more than half a day, so not a connection we count.