That’s a great question. Regarding Biden, POTUS is supposed to stay hands-off of all DOJ investigations, but particularly any involving a special council.
I think Garland is hyper-aware of perceptions of DOJ partisanship, so this might keep him from pushing anything too aggressively.
The fact that the Durham probe has now lasted twice as long as the Mueller probe it was supposed to be investigating, and literally has nothing to show for it, is quite a statement. What the nature of the statement is depends entirely on what existing political bias the observer brings to the discussion.
This article provides a solid, if biased, summary.
A new report reveals how politicized and conspiratorial the Durham investigation was.
www.vox.com