FR 4586 then LL 5051 at Barcelona
Porto → Barcelona → Düsseldorf
Timetable, Barcelona time
21:10FR 4586 from Porto at the gate
18:00LL 5051 to Düsseldorf leaves the gate
20 h 50 apart on the timetable, overnight
LL 5051 leaves 20 h 50 after FR 4586 arrives on the timetable: more than half a day, so not a connection we count.