U2 8784 then A3 607 at Gatwick
Prague → London → Athens
Timetable, London time
22:10U2 8784 from Prague at the gate
12:15A3 607 to Athens leaves the gate
14 h 05 apart on the timetable, overnight
A3 607 leaves 14 h 05 after U2 8784 arrives on the timetable: more than half a day, so not a connection we count.