"We have reason to believe that the implementation of the third proposal of the Polish side to the Russian legal aid - to pass the record of the preliminary analysis of flight recorders, is likely to be implemented in next two weeks' - said Seremet "Until we receive the rest of the evidence that Polish side acquired from the Russian's, Polish prosecutors can not make a decision on disclosure of their contents" - general attorney added
General Attorney Andrew Seremet
google translation from polish that I've tried to fix. Still may be bad
That mean's maybe 4 weeks after crash . Why ?