That's because Amanda was a "witness" at this time, not a suspect.
The trouble with this view is that the police are having it both ways: Edgardo Giobbi could tell from the first day that Amanda was the killer, because of the way she "swayed her hips", and because she was eating pizza days later when she should have been paralysed with grief. And Arturo di Felice chose to describe her confession the next day as "facts we knew to be correct".
Yet we're supposed to believe that she was not under suspicion until after she was arrested, so they didn't have to record her interview, or provide her with an impartial interpreter, or permit her access to a lawyer.
You are mistaken. Your use of "suspect" in this context means only "person of interest", not a legal category in Italian law.
Legally Amanda became suspect when there was evidence that she may be involved in the crime.
Amanda's 1:45AM confession produced this evidence.
Before that she had been only a "person of interest".
For example the police intercepted also Filomena ond others, so they were somewhat suspicous of them at that time.
But they never "gained" suspect status.
people continue to be apologists for the bandits masquerading as police officers in Perugia. Everything about the interview suggests that they engineered the "collapse and confession", having set out to do so. What is it that motivates so many people to continue parrotting the police/prosecution line in this case?
The impression that it was not an engineered collapse.
In the first place they did not call Amanda. Great engineering.
As I see they wanted to grill Raffaele, mostly beacuse of the intercepted phone conversation (same day afternoon) with his father in which he asked Raffaele not to walk around with the knives especially when he goes to the police. And Raffaele said "Why? These idiots will never discover it."
So they decided to teach him a lesson. And they did.
you've still signed up to a logically unsupportable position.
I don't think so.
The only reason I think they are guilty is because based on my knowledge of the case I find it more logical than the opposite.
Of course, I could be mistaken.
Ah ... so you agree that they could have lied about the missing recording?
They could. It would not be the first time in police history.