U2 803 then U2 8307 at Gatwick
Edinburgh → London → Milan
Timetable, London time
15:15U2 803 from Edinburgh at the gate
11:20U2 8307 to Milan leaves the gate
20 h 05 apart on the timetable, overnight
U2 8307 leaves 20 h 05 after U2 803 arrives on the timetable: more than half a day, so not a connection we count.