U2 8446 then U2 8307 at Gatwick
Nantes → London → Milan
Timetable, London time
11:40U2 8446 from Nantes at the gate
11:20U2 8307 to Milan leaves the gate
23 h 40 apart on the timetable, overnight
U2 8307 leaves 23 h 40 after U2 8446 arrives on the timetable: more than half a day, so not a connection we count.