EC 3749 then IB 5130 at Barcelona
Milan → Barcelona → Alicante
Timetable, Barcelona time
21:30EC 3749 from Milan at the gate
12:40IB 5130 to Alicante leaves the gate
15 h 10 apart on the timetable, overnight
IB 5130 leaves 15 h 10 after EC 3749 arrives on the timetable: more than half a day, so not a connection we count.