EC 8306 then U2 8843 at Gatwick
Milan → London → Reykjavík
Timetable, London time
13:55EC 8306 from Milan at the gate
08:00U2 8843 to Reykjavík leaves the gate
18 h 05 apart on the timetable, overnight
U2 8843 leaves 18 h 05 after EC 8306 arrives on the timetable: more than half a day, so not a connection we count.