U2 8494 then U2 8055 at Gatwick
Geneva → London → Barcelona
Timetable, London time
10:20U2 8494 from Geneva at the gate
07:40U2 8055 to Barcelona leaves the gate
21 h 20 apart on the timetable, overnight
U2 8055 leaves 21 h 20 after U2 8494 arrives on the timetable: more than half a day, so not a connection we count.