BT 159 then SK 223 at Oslo
Riga → Oslo → Kjevik
Timetable, Oslo time
13:30BT 159 from Riga at the gate
20:45SK 223 to Kjevik leaves the gate
7 h 15 apart on the timetable
The last days
BT 159 and SK 223 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.