SK 1630 then FR 8523 at Copenhagen
Düsseldorf → Copenhagen → Poznan
Timetable, Copenhagen time
11:30SK 1630 from Düsseldorf at the gate
06:10FR 8523 to Poznan leaves the gate
18 h 40 apart on the timetable, overnight
FR 8523 leaves 18 h 40 after SK 1630 arrives on the timetable: more than half a day, so not a connection we count.