I would argue that Icelandair is the main competitor of SAS on CPH-KEF and OSL-KEF routes. I didn't suggest someone would fly between two continental destinations via KEF of course. My point is that SAS isn't reacting even on those routes where they competition dropped masks (e.g. LHR, KEF, etc.) which is a bit bizzare. But perhaps they're waiting for Ryanair as they have a long history of copying their service concept.