Yes several issues remain unclear as to who was where and when and that is part of the problem. To list them all would take far too long at the moment. Reconstructions are a normal tool for police services all over the world but the Portuguese do reconstitutions which require the original participants to take part.
How can any 'issues' be cleared up unless the 10 people involved could faithfully and accurately repeat their exact movements from one night - 12 months prior - at the exact time they had made them?
It would only take one of them to be a couple of minutes wrong with their recollection of the times for the recon to fail.
All an attempted recon would have proved IMO is that it is absolutely impossible for 10 people to re-create their movements
without the precision of memory which, in this particular case, would be a vital requirement - in order for an accurate recon to be achieved. Apart from GM - the one thing they could not remember were
precise times - and no self-respecting policeman would expect them to in those circumstances.