DS 8488 then U2 8419 at Gatwick
Geneva → London → Nice
Timetable, London time
12:10DS 8488 from Geneva at the gate
08:25U2 8419 to Nice leaves the gate
20 h 15 apart on the timetable, overnight
U2 8419 leaves 20 h 15 after DS 8488 arrives on the timetable: more than half a day, so not a connection we count.