FR 80 then DY 943 at Copenhagen
Budapest → Copenhagen → Oslo
Timetable, Copenhagen time
19:40FR 80 from Budapest at the gate
16:45DY 943 to Oslo leaves the gate
21 h 05 apart on the timetable, overnight
DY 943 leaves 21 h 05 after FR 80 arrives on the timetable: more than half a day, so not a connection we count.