On the subject of what the police knew and when they knew it, I have already gone over that the police had Amanda's phone records from the evening of the 2nd. They will see the text exchange with Patrick's number being the last activity on Amanda's phone before Mererdith's murder. Earlier that day and discussed in the trial on day 2 we learn what the police can do with phone numbers:
2009-02-07: Trial day 2
http://perugia-shock.blogspot.com/2009/02/amanda-diabolic-or-lost-in-translation.html
In the evening of November 1 Lana is about to go to the toilet, before going to bed, and right in that moment a stranger calls her, saying that under her toilet there's a bomb. A joke which couldn't be more timed. She calls the Police who arrive immediately, it was urgent,
Rather than the toilet the police checks the garden, but it's okay, Lana feels relaxed. And good night.
Next morning, November 2, in the middle of a lawn of Lana's garden, about 15-20 meters from the street, her son Alessandro finds the Motorola cellphone, turned off.
Postal Police station, 10:58: Lana Elisabetta starts dictating her lawsuit against unknown and delivers the Motorola, thinking that the police lost it the night before.
11:31, commissioner Bartolozzi closes the record and queries the Vodafone database for that number: Romanelli Filomena, via della Pergola 7, Perugia.Right after, before 12:00, a patrol leaves, Bartolozzi states, destination via della Pergola.
Lana goes shopping. But her daughter Giannetta calls her. She found another cellphone that was ringing in the bushes of the property, 5-6 meters from the street. Someone is calling again that Ericson cellphone: AMANDA.
12:46, Lana is again in front of Bartolozzi with the new cellphone. But the number doesn't appear this time, it must be a foreign sim.Bartolozzi writes in the second record that a patrol leaves for via della Pergola after he sized both cellphones, so it must be at around 13:00.
Did the patrol leave before 12 or around 13? Where is the mistake?
Bartolozzi explains that he made a mistake in the written record, and that the patrol was sent out around 12:00 rather than after 12:46.
So, the postal police have direct access to the database for providers operating within their country. If Patrick's phone is Italian, the police could know his name as early as November 2.
Frank interviews Patrick at his home: Perugia-Shock 2008-03-03
"I have a Vodafone SIM. {1} It doesn't "work" in the bar and I always leave it here, you see, just here. It's the only place where it "works" a little bit. {2} That evening my cellphone was here. I don't know how it could have hooked the cell of via S.Antonio. Now that you ask me, I have to remember to ask my lawyers because it's really a mystery for me.
{3} The lawyer uses the occasion to remind me that even the presumed change of cellphone never occurred, whatever importance it may have had. If you ask, just to know, why Patrick admitted it, even the lawyer gets mad...
ETA: I had earlier presumed that this interview had taken place at Patrick's bar because the Swiss professor asserts that is where Patrick was at the time when the text messages were exchanged. But I believe the bar would still be closed at the time this interview took place.