Personally I think Nencini has performed his role very well, nothwithstanding the emotional, xenophobic and visceral beliefs to the contrary shown by some commentators, here and elsewhere. Of course he's foreign and "Italian" so by definition very suspect but ...
Let's all move on now, get this guilty pair behind bars. There are always going to be winners and losers in every situation and this one has been going on for far too long. The supporters of this gruesome and nerdy couple need to reflect long and hard on their sentimental allegiance to a PLAINLY dysfunctional, lying and murderous pair and ask themselves how they were unconsciously driven to side with them.
Make no mistake whatsoever, RS and AK are both going to get their dues and the sooner their supporters, including all the fake lawyers, philosophers, biologists etc., swallow that bitter pill and get back to their "proper" jobs (if they have them) the sooner some semblance of sanity can return after 6+ years. Enough now for crying out loud. Game over.