I don't see any real collaboration at all. PJ are obviously cooperating with German requests, but that's not the same as collaboration to my mind.
I think OG are pretty much out of it and consider MM as missing, whereas the Germans consider she is dead
It has been my impression that there are some in the PJ who were reluctant to give up on past error. For example when reviewing the case prior to reopening it, the fresh eyes used to check the evidence were from the North.
Jornal de Notícias, page 2, March 10, 2012 | Online paid edition
PJ inspectors from Oporto have been to the Algarve several times over the last few months, secretly working on the Maddie case. The re-analysis of all of the case’s elements has already been through the verification of telephone data.
Everyone who has been, one way or another, connected to the Madeleine McCann case investigation, on the 3rd of May of 2007, admit that there may be lapses in the process. Nevertheless, the major difficulty is related to the time that has already passed since the disappearance, which may have dissipated potential evidence that has never been found.
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That tension was still there in my opinion regarding a German request for help with DNA
From the Mirror
Police in Germany and Portugal have clashed over sharing DNA evidence that could lead to a breakthrough in the Madeleine McCann case, according to reports.
German investigators want to
retest a mystery saliva sample found in the holiday apartment the British toddler vanished from.
However, the Portuguese police are reportedly unwilling to budge, with a source close to the Policia Judiciaria labelling re-testing "a total waste of time".
German investigators want to retest a saliva sample found on Madeleine McCann's bed in the holiday apartment she vanished from - though the Portuguese are reportedly unwilling to budge after their scientists failed to extract a full DNA profile
www.mirror.co.uk
My impression now is that having seen more of the evidence which led to CB being constituted arguido, the majority of the PJ are now on board with everyone else.
My impression is that SY and the BKA have worked well together from the start of the investigation of CB.
I also think that the case was reopened in Portugal regarding the 'new evidence' required to do so when the Porto PJ looked at the file containing phone evidence.