EC 7154 then LA 5796 at Barcelona
Milan → Barcelona → Zurich
Timetable, Barcelona time
23:15EC 7154 from Milan at the gate
18:40LA 5796 to Zurich leaves the gate
19 h 25 apart on the timetable, overnight
LA 5796 leaves 19 h 25 after EC 7154 arrives on the timetable: more than half a day, so not a connection we count.