FR 4586 then FR 3320 at Barcelona
Porto → Barcelona → Milan Bergamo
Timetable, Barcelona time
21:10FR 4586 from Porto at the gate
18:15FR 3320 to Milan Bergamo leaves the gate
21 h 05 apart on the timetable, overnight
FR 3320 leaves 21 h 05 after FR 4586 arrives on the timetable: more than half a day, so not a connection we count.