DY 1955 then DY 770 at Oslo
Belgrade → Oslo → Trondheim
Timetable, Oslo time
23:20DY 1955 from Belgrade at the gate
20:40DY 770 to Trondheim leaves the gate
21 h 20 apart on the timetable, overnight
DY 770 leaves 21 h 20 after DY 1955 arrives on the timetable: more than half a day, so not a connection we count.