U2 802 then A0 461 at Gatwick
Belfast City → London → Porto
Timetable, London time
20:50U2 802 from Belfast City at the gate
15:31A0 461 to Porto leaves the gate
18 h 41 apart on the timetable, overnight
A0 461 leaves 18 h 41 after U2 802 arrives on the timetable: more than half a day, so not a connection we count.