EC 3749 then LA 5779 at Barcelona
Milan → Barcelona → Marseille
Timetable, Barcelona time
21:30EC 3749 from Milan at the gate
12:35LA 5779 to Marseille leaves the gate
15 h 05 apart on the timetable, overnight
LA 5779 leaves 15 h 05 after EC 3749 arrives on the timetable: more than half a day, so not a connection we count.