U2 8286 then U2 837 at Gatwick
Catania → London → Belfast International
Timetable, London time
20:45U2 8286 from Catania at the gate
20:35U2 837 to Belfast International leaves the gate
23 h 50 apart on the timetable, overnight
U2 837 leaves 23 h 50 after U2 8286 arrives on the timetable: more than half a day, so not a connection we count.