FR 4584 then LL 5051 at Barcelona
Porto → Barcelona → Düsseldorf
Timetable, Barcelona time
18:35FR 4584 from Porto at the gate
18:00LL 5051 to Düsseldorf leaves the gate
23 h 25 apart on the timetable, overnight
LL 5051 leaves 23 h 25 after FR 4584 arrives on the timetable: more than half a day, so not a connection we count.