Yes. Mueller wanted more of the report out and for it to be released asap. "More" however, is different than saying that he did not agree with what had already been released. As discussed twice though, Barr, said no to releasing that because he was just days away from releasing the whole report so summaries would be moot. Did I not say that twice? And lest you lefties forget, Mueller's job was to do the report unfettered and that happened. Barr, however, is the AG and Mueller reported to him and Mueller decides whether the full report would be released in a few days or whether he has to release more of Muellers stuff before then. Barr's call, not Muellers, and no criminality involved in doing his job as AG.
Barr made it very clear in his testimony that although Mueller wanted more summary material released that he was about to release the full report and did not want to get into dealing with even more discussion about whether those summaries were complete or not. Sorry Charlie. Barr is not Jeff Sessions. He is running the DOJ.
Barr is doing a great job.