EC 7154 then SN 3704 at Barcelona
Milan → Barcelona → Brussels
Timetable, Barcelona time
23:15EC 7154 from Milan at the gate
17:40SN 3704 to Brussels leaves the gate
18 h 25 apart on the timetable, overnight
SN 3704 leaves 18 h 25 after EC 7154 arrives on the timetable: more than half a day, so not a connection we count.