LL 5457 then EC 7151 at Barcelona
Vigo → Barcelona → Milan
Timetable, Barcelona time
11:45LL 5457 from Vigo at the gate
07:30EC 7151 to Milan leaves the gate
19 h 45 apart on the timetable, overnight
EC 7151 leaves 19 h 45 after LL 5457 arrives on the timetable: more than half a day, so not a connection we count.