Circus? Or Forum?

There is no requirement, as far as I am aware, that any testimony by Robert S. Mueller, before any Congressional Committee, has to follow a "Question and Answer" format.

Mueller can be allowed, or tasked with, making a presentation of his report to Congress, in committee, while allowing no follow up questioning by ANYONE.

This would have the effect, one might say, of creating a "movie version" of the report for those that choose not to read, which, it appears, seems to be most people these days, including many Representatives and Senators.

Seems reasonable to me.