Yes, you publicly announce everything now so you can throw it all at the feet of the ousted leader. If not, enough time will pass where blaming the ousted leader looks like excuses for the current one and just looks bad to the public. Look at the current US administration as an example of how the constant blaming of the previous administration played to the public opinion.

Right. One of the weird side effects of the Jensen Huang report hierarchy is that instead of a handful of direct reports that have stories they need to CYA on, there are over sixty of them! This could make the congressional testimony aspect pretty intense.

And each has plausible deniability of their personal involvement, since the responsibility is so diffuse below Huang.