:: Can/will they wait until after Dane and Milwaukee report? ::
Doesn’t matter. There is no requirement to publicly report any “preliminary” totals. The totals must be reported (which is usually done on paper) for certification within (I think) a week.
The reported totals we are used to seeing are courtesy totals for the press.
Does that mean Dane and Milwaukee counties have an additional seven days to manufacture votes before they need to submit the official tally for certification?