EC 7154 then VY 1244 at Barcelona
Milan → Barcelona → Vigo
Timetable, Barcelona time
23:15EC 7154 from Milan at the gate
21:25VY 1244 to Vigo leaves the gatealso IB 5500
22 h 10 apart on the timetable, overnight
VY 1244 leaves 22 h 10 after EC 7154 arrives on the timetable: more than half a day, so not a connection we count.