Prosecutions don’t wait until an administrative report has been issued.
And prosecutions also don't happen without an investigation and an indictment.
You don't just prosecute someone, especially at the federal level, without doing your homework ahead of time.
Evidence is not what you read or hear about in the media. That may get the prosecutor's attention and interest to open an investigation but you just don't prosecute someone, Lisa Page or anyone else, without documented evidence and an indictment first.
And the way I understand it is the Horowitz investigation won't come with criminal indictments. There may be recommendations or referrals for criminal charges, but it is the Durham investigation that has already turned into a criminal investigation of its own. We will have to wait a while longer for it.
We'll see what Horowitz's report says about Lisa Page, if anything. But she won't be prosecuted because of what we've seen in the media about her. DOJ will need more than that.