DY 2059 then DY 823 at Arlanda
Prague → Stockholm → Oslo
Timetable, Stockholm time
13:20DY 2059 from Prague at the gate
19:35DY 823 to Oslo leaves the gate
6 h 15 apart on the timetable
The last days
DY 2059 and DY 823 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.