So we were flying CPH to KEF a few weeks ago. We woke up to 'welcome to copenhagen' in a panic, thinking we got on the wrong flight. Nope, mechanical issue and we'd turned back and hour into flight, unknown to sleeping us. As soon as we'd turned back, SAS knew the delay would be well over 3 hrs (its a 3 hr flight). we land and are simply told to be back at the neighboring gate in an hour and 15 minutes for a new flight with a new plane. No offer of food, vouchers, information in writing on compo. Lots of 'better safe then sorry', no apology. I inquired with the pilot, a mechanical issue that couldnt be fixed in iceland. Oh so, not preventing us getting to iceland, just would cost them a lot to send a plane an mechanics etc. ok, so eu261 applies. Get out, no one at either gate to talk to.

Get lunch on our own dime, back to the plane for boarding slightly late from new time. Are told on the plane once door closed that limited food on board, for purchase only and it'd need to be claimed back, no freebie food. Ha. Get to KEF 3.5 hrs past original arrival time.
Email in eu 261 claim, guy ignores the no food, the no comms, no info in writing. Offers 300eur, as its a 600 eur compo flight and he thinks the 50% reduction applies.
Reduces compo by 50% and ignores me when I say that doesnt apply due to article 8 saying I must have arrived within 3 hrs of original scheduled time. I did not. I arrived 3 hrs and 31 min after scheduled time (flight radar proves this).

I intend to file a compliant with the danish authorities as I believe its either 400 or 600 eur each pax.

As a side note - SAS are terrible. They do the absolute bare minimum and less than that to accommodate people and follow the law. They were at their home base, I was expecting to be handed a 50eur food voucher on deplaning from the first flight. No mention of this, comms availability, or written info. How hard is it to send someone down to the gate with a stack of food vouchers and compo pamphlets in your home airport?! Seems their bs strategy is to make it the pax problem, not the airlines. Will avoid SAS in future.