EC 3749 then IB 5068 at Barcelona
Milan → Barcelona → Geneva
Timetable, Barcelona time
21:30EC 3749 from Milan at the gate
15:10IB 5068 to Geneva leaves the gate
17 h 40 apart on the timetable, overnight
IB 5068 leaves 17 h 40 after EC 3749 arrives on the timetable: more than half a day, so not a connection we count.