I looked through this thread here regarding how fast we're moving relative to the CMBR, but I wonder if it would be hypothetically possible to get an even better measurement while also looking for a decent value for 'absolute still' using the apparent asymmetry of time dilation/constriction. A hypothetical 'still' entity would appear to be moving rapidly to us, but if we were to attach a clock to it a comparison would reveal that we're moving and it is being more 'still' since its time would appear constricted by comparison yes? Say that we're traveling at an average direction x at our 'home' velocity (all velocities averaged together for the Earth). An object 'A' traveling in an opposite -x direction would be effectively 'slowing up', just like if you're on a freeway going 60 next to a car matching your speed and they put on their brakes they will appear to move 'backwards'. Then another object 'B' could move in different directions and speeds around object 'A' comparing clocks to look for an even more 'still' reference frame. Is this possible or do I have a fundamental misunderstanding of time dilation and relativity?