DY 375 then AY 914 at Oslo
Tromso → Oslo → Helsinki
Timetable, Oslo time
15:00DY 375 from Tromso at the gate
12:30AY 914 to Helsinki leaves the gate
21 h 30 apart on the timetable, overnight
AY 914 leaves 21 h 30 after DY 375 arrives on the timetable: more than half a day, so not a connection we count.