This was not the main defamation trial. It was a later procedural dispute about subpoenas issued after the respondents had successfully defended Ben Roberts-Smith's defamation proceedings.
Once the defamation claims were dismissed, the respondents sought their costs. They also sought costs orders against two non-parties, SNOL and ACE. Their case was that those companies had funded Mr Roberts-Smith's litigation and may have played a role in its conduct that was relevant to whether a third-party costs order should be made.
To investigate that issue, the respondents issued subpoenas to SNOL, ACE, Herbert Smith Freehills and Addisons. The recipients then asked the Court to set the subpoenas aside, arguing that the documents sought could not affect the determination of the proposed third-party costs application.
That made this a practical fight about the boundary between legitimate evidence gathering and overreach. The Court had to decide whether the subpoenas were properly connected to a live issue, whether they should be narrowed, and how privilege concerns should be handled.