QR 3641 then U2 8064 at Barcelona
Catania → Barcelona → London Gatwick
Timetable, Barcelona time
20:55QR 3641 from Catania at the gate
12:50U2 8064 to London Gatwick leaves the gate
15 h 55 apart on the timetable, overnight
U2 8064 leaves 15 h 55 after QR 3641 arrives on the timetable: more than half a day, so not a connection we count.