I think I can help. Most of the hoo-haw over Feinstein wanting to keep the FBI investigation results private as opposed to public comes from a tweet by CNN’s Elizabeth Landers
https://twitter.com/elizlanders/status/1047171789787467776
This isn’t really a shocker. The real shocker would be if anyone were actually wanting the investigation report to be public. That report has a lot of personal information in it from people they talked with. It should not, for reasons of privacy, be made public. It has nothing to do with trying to hide results. I would wage my next paycheck, though, that parts of this report will be leaked by one side or the other. Or both.