I know there is a good chance that I am confused about this but I really need someone to clear it up.
Expansion or contraction of space could happen 2 different ways.
1) Space is added so that there was 1 meter and now there is 3 meters 2 meters of space was created. All observers see the new realestate.
2) Space is stretched, 1 meter gets stretched. Locally ( relative to something in the stretched space(-time) 1 meter is still equal to a meter but for an observer outside they would see 3 meters.
In the second stretching I would argue that if space is stretched then time also needs to be stretched relative to the observer OR the speed of light will not stay constant at all points.
In the first time and space are independant. In the second they are related.
Can we agree?