EC 3749 then LA 5757 at Barcelona
Milan → Barcelona → Paris Charles de Gaulle
Timetable, Barcelona time
21:30EC 3749 from Milan at the gate
15:40LA 5757 to Paris Charles de Gaulle leaves the gate
18 h 10 apart on the timetable, overnight
LA 5757 leaves 18 h 10 after EC 3749 arrives on the timetable: more than half a day, so not a connection we count.