DY 3581 then D8 3658 at Copenhagen
Prague → Copenhagen → Barcelona
Timetable, Copenhagen time
11:45DY 3581 from Prague at the gate
17:10D8 3658 to Barcelona leaves the gate
5 h 25 apart on the timetable
Copenhagen’s board shows about 80% of departures at their timetable time, so delays of a few minutes don’t show here.
The last days
DY 3581 and D8 3658 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.