EC 3749 then IB 5938 at Barcelona
Milan → Barcelona → Marseille
Timetable, Barcelona time
21:30EC 3749 from Milan at the gate
12:35IB 5938 to Marseille leaves the gatealso LL 5938, VY 8132
15 h 05 apart on the timetable, overnight
IB 5938 leaves 15 h 05 after EC 3749 arrives on the timetable: more than half a day, so not a connection we count.