U2 802 then U2 847 at Gatwick
Belfast City → London → Inverness
Timetable, London time
20:55U2 802 from Belfast City at the gate
12:50U2 847 to Inverness leaves the gate
15 h 55 apart on the timetable, overnight
U2 847 leaves 15 h 55 after U2 802 arrives on the timetable: more than half a day, so not a connection we count.