IB 1212 then U2 8020 at Madrid
Nice → Madrid → London Gatwick
Timetable, Madrid time
14:35IB 1212 from Nice at the gatealso VY 5296, QR 8006, AA 8811
12:45U2 8020 to London Gatwick leaves the gate
22 h 10 apart on the timetable, overnight
U2 8020 leaves 22 h 10 after IB 1212 arrives on the timetable: more than half a day, so not a connection we count.