DY 3658 then LA 5758 at Barcelona
Copenhagen → Barcelona → Rome
Timetable, Barcelona time
20:00DY 3658 from Copenhagen at the gate
17:20LA 5758 to Rome leaves the gate
21 h 20 apart on the timetable, overnight
LA 5758 leaves 21 h 20 after DY 3658 arrives on the timetable: more than half a day, so not a connection we count.