I had suspicions about Amaral a long time ago. Not least in ignoring Brueckner. And then trying to pervert the course of Justice. Although Portugal don't seem to be that much bothered beyond making Brueckner an Arguido. Portugal can't actually question him as he has a right to silence. So that's a damp squib.
Based on the information already in the public domain regarding Brueckner, I think he is a very credible suspect.
Which makes Amaral's lies regarding evidence about his vehicles and his appearance even more remarkable than it already was. What on earth was he playing at? apart from a demonstration of his tried and tested technique as used against the McCanns of the court of public opinion.
Even while defending Brueckner Amaral found time to get the knife into the McCanns at every opportunity. A really sensitive way of treating parents living with the knowledge that a person like Brueckner is the prime suspect in their daughter's disappearance.