U2 8316 then VY 7607 at Gatwick
Pisa → London → Barcelona
Timetable, London time
15:25U2 8316 from Pisa at the gate
13:00VY 7607 to Barcelona leaves the gate
21 h 35 apart on the timetable, overnight
VY 7607 leaves 21 h 35 after U2 8316 arrives on the timetable: more than half a day, so not a connection we count.