JU 390 then DY 778 at Oslo
Belgrade → Oslo → Trondheim
Timetable, Oslo time
08:55JU 390 from Belgrade at the gate
20:00DY 778 to Trondheim leaves the gate
11 h 05 apart on the timetable
The last days
JU 390 and DY 778 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.