EC 8376 then U2 875 at Gatwick
Milan → London → Saint Helier
Timetable, London time
19:25EC 8376 from Milan at the gate
12:10U2 875 to Saint Helier leaves the gate
16 h 45 apart on the timetable, overnight
U2 875 leaves 16 h 45 after EC 8376 arrives on the timetable: more than half a day, so not a connection we count.