1)
We applied the term coordination in that sense when stating in the report that the investigation did not establish that the Trump Campaign coordinated with the Russian government in its election interference activities. https://www.justice.gov/archives/sco/file/1373816/download
Mueller made it clear, the investigation found no evidence to establish the claim...obviously we know why now since it was all a Demafascist hoax....Durham did not say the evidence didn't establish wrong doiong by the Obama DOJ...in your quote he clearly states there wasn't enough in his view to establish in beyond a reasonable doubt...he specifically picked those words for a reason, and it's vastly different then what Mueller concluded and stated.
2) hahahha what? Yes a Prosecutor can, but police charge people all the freaking time...ever gotten a speeding ticket? You think the prosecutor is being called and told to charge the person? are you an idiot?
3) No, not at all...if they were exenorated they would have said what Mueller did, they didn't.