Good point on the quarterly vs continuous measurement. I'm not implying they are rigidly mapped but it makes sense you can put quality changes down as an objective for a team. This can be both end-of-quarter quality but also the general rate of change over the entire quarter.

Depending on the situation, I have seen teams aim to achieve certain SLOs but it can also be that certain other things can be achieved without letting the SLOs suffer (if they're already at a reasonably high quality).