DY 999 then DY 374 at Oslo
Billund → Oslo → Tromso
Timetable, Oslo time
16:35DY 999 from Billund at the gate
12:25DY 374 to Tromso leaves the gate
19 h 50 apart on the timetable, overnight
DY 374 leaves 19 h 50 after DY 999 arrives on the timetable: more than half a day, so not a connection we count.