EC 7154 then IB 416 at Barcelona
Milan → Barcelona → Madrid
Timetable, Barcelona time
17:25EC 7154 from Milan at the gate
17:00IB 416 to Madrid leaves the gatealso IB 416S, LL 3016, VY 5068, QR 6587, BA 7083, CZ 7325, AA 8732
23 h 35 apart on the timetable, overnight
IB 416 leaves 23 h 35 after EC 7154 arrives on the timetable: more than half a day, so not a connection we count.