And how does any of this implicate Mercedes as a culprit? If anything it shows that Pirelli is the one acting on its own accord.
Well, the fact that no other team was partaking in the test should have made Mercedes suspicious about testing being offered to all the teams, so that particular stipulation was obviously violated and Mercedes should have at least contacted the FIA.
It still doesn't mean it was the responsibility of Mercedes to check or notify the FIA that Pirelli was carrying out the test, legally it's thin to say the least that any action can be taken against Mercedes.
The document already hints at the solution. Make the same test available to everyone else.
Yeah, but it says equal conditions, which means all teams should have been able to test at the same time, so someone has

up if that document is correct.
Surely, as competitors, Mercedes' do have a responsibility to ensure they are complying with the regulations, the thing is, I guess Mercedes maybe weren't involved in the test, other than car or drivers, which seems to be permitted, and the regulations in question are the FIA's contract with Perrelli? Or is a breach of the sporting regulations? I am pretty sure Mercedes have a duty to ensure they are requiring with the latter, regardless of Perelli's involvement.