W4 6315 then EC 7173 at Barcelona
Milan → Barcelona → Berlin
Timetable, Barcelona time
12:25W4 6315 from Milan at the gate
07:20EC 7173 to Berlin leaves the gate
18 h 55 apart on the timetable, overnight
EC 7173 leaves 18 h 55 after W4 6315 arrives on the timetable: more than half a day, so not a connection we count.