U2 8306 then U2 8439 at Gatwick
Milan → London → Marseille
Timetable, London time
20:55U2 8306 from Milan at the gate
17:10U2 8439 to Marseille leaves the gate
20 h 15 apart on the timetable, overnight
U2 8439 leaves 20 h 15 after U2 8306 arrives on the timetable: more than half a day, so not a connection we count.