At my big state R1 university, the whole tenured faculty will be aware of a committee recommendation against tenure, and/or have actually voted on the issue.
In some cases, the untenured person is "counseled out", so the issue never comes to a vote. This part of the process is less sunlit, since "private consensus" that the person's tenure vote would fail (in the dept) is potentially very subjective/volatile.
(I have indeed seen more than one occasion in which a senior faculty person down-talked a person who'd been approved by the committee... effectively "black-balling" the person, since our dept insists on a substantial super-majority to approve tenure. That event was not made public, etc. On at least one occasion, a grievance was filed, and (I know because I testified...) the higher-ups' conclusion was that there was a "procedural problem", but no change in the conclusion. On another occasion, a senior faculty person apparently exercised inappropriate influence in the (otherwise rubber-stamping departments' recommendations) "Dean's committee"... the Dean recognized that something was fishy, and, by chance, I did personally go to talk to the Dean about the weird outcome, ... so in that case the craziness was avoided. But, to respond to the literal question, there was not even a private, much less public discussion of the process or the craziness.)
So: it's effectively private, but faculty have not signed NDAs...