IB 5355 then FI 6405 at Barcelona
Milan → Barcelona → Lisbon
Timetable, Barcelona time
14:55IB 5355 from Milan at the gatealso LL 5355, VY 6043
14:35FI 6405 to Lisbon leaves the gatealso S4 8947
23 h 40 apart on the timetable, overnight
FI 6405 leaves 23 h 40 after IB 5355 arrives on the timetable: more than half a day, so not a connection we count.