The exercise is not a reinvestigation of the occurrence, and hence the TSB has not sought to reinterview involved parties. However, as part of reviewing the ATSB’s investigations, the statements and other evidence of involved parties have been available to the review team..."
This appears to be an important paragraph. Watch out for the press releases to see if this limit in scope is made clear or whether it is implied the TSB re investigated the work of the ATSB.