FR 3977 then EW 9445 at Barcelona
Dublin → Barcelona → Düsseldorf
Timetable, Barcelona time
19:05FR 3977 from Dublin at the gate
16:20EW 9445 to Düsseldorf leaves the gate
21 h 15 apart on the timetable, overnight
EW 9445 leaves 21 h 15 after FR 3977 arrives on the timetable: more than half a day, so not a connection we count.