It ain't rocket science Brietta. The police have admitted that they have no evidence upon which they could rely at trial. Given that Brueckner is an easy target that tells me they had zilch to begin with and were basically hoping that some informer would come forward.
Their approach has sadly come back to bite them in the ass.
I do not think Brueckner was as easy a target as you seem to think, Angelo ... and given that apparently he was forewarned in 2017, if he is a guilty man that was enough time to cover his tracks and tie up loose ends.
No point in arguing about things of which we have no knowledge.
The police have told us only what they want us to know.
In my opinion we wouldn't yet know even that much if Amaral hadn't sprung that upon them by putting enough information into the public domain to ensure journalists would track Brueckner down and release it precipitately.
I think the only 'ass' in the equation is Amaral who i believe ensured the investigating police were propelled into confirming certain details they were working on before they were ready.
Maybe somebody should ask him why he did that ... and who knows, perhaps someone will.