DS 8508 then U2 8783 at Gatwick
Geneva → London → Prague
Timetable, London time
14:25DS 8508 from Geneva at the gate
06:50U2 8783 to Prague leaves the gate
16 h 25 apart on the timetable, overnight
U2 8783 leaves 16 h 25 after DS 8508 arrives on the timetable: more than half a day, so not a connection we count.