EC 8376 then VY 7619 at Gatwick
Milan → London → Barcelona
Timetable, London time
19:25EC 8376 from Milan at the gate
16:50VY 7619 to Barcelona leaves the gate
21 h 25 apart on the timetable, overnight
VY 7619 leaves 21 h 25 after EC 8376 arrives on the timetable: more than half a day, so not a connection we count.