DY 3581 then FR 8523 at Copenhagen
Prague → Copenhagen → Poznan
Timetable, Copenhagen time
11:45DY 3581 from Prague at the gate
06:10FR 8523 to Poznan leaves the gate
18 h 25 apart on the timetable, overnight
FR 8523 leaves 18 h 25 after DY 3581 arrives on the timetable: more than half a day, so not a connection we count.