IB 5353 then EC 8064 at Barcelona
Milan → Barcelona → London Gatwick
Timetable, Barcelona time
11:55IB 5353 from Milan at the gate
07:10EC 8064 to London Gatwick leaves the gate
19 h 15 apart on the timetable, overnight
EC 8064 leaves 19 h 15 after IB 5353 arrives on the timetable: more than half a day, so not a connection we count.