IB 5355 then EC 7205 at Barcelona
Milan → Barcelona → Southampton
Timetable, Barcelona time
14:55IB 5355 from Milan at the gatealso LL 5355, VY 6043
13:05EC 7205 to Southampton leaves the gate
22 h 10 apart on the timetable, overnight
EC 7205 leaves 22 h 10 after IB 5355 arrives on the timetable: more than half a day, so not a connection we count.