DS 8488 then EC 8375 at Gatwick
Geneva → London → Milan
Timetable, London time
12:10DS 8488 from Geneva at the gate
09:20EC 8375 to Milan leaves the gate
21 h 10 apart on the timetable, overnight
EC 8375 leaves 21 h 10 after DS 8488 arrives on the timetable: more than half a day, so not a connection we count.