DY 3581 then SN 2258 at Copenhagen
Prague → Copenhagen → Brussels
Timetable, Copenhagen time
15:05DY 3581 from Prague at the gate
12:15SN 2258 to Brussels leaves the gate
21 h 10 apart on the timetable, overnight
SN 2258 leaves 21 h 10 after DY 3581 arrives on the timetable: more than half a day, so not a connection we count.