Oslo is 6 hours behind Taipei
Best overlap: 2:00 PM to 6:00 PM in Taipei is 8:00 AM to 12:00 PM in Oslo.
Shoot for 2:00 PM to 6:00 PM in Taipei; your Oslo colleagues will see that as 8:00 AM to 12:00 PM. Oslo is 6 hours behind Taipei, so the practical overlap is about 4 hours — generous enough for meetings, tight enough to be worth booking ahead. Note that Oslo follows daylight saving while Taipei stays put, so the times above drift by an hour seasonally.