The Senate PEL AIR report is generally dismissed as 'politics' by most commentators overseas with whom I have spoken.
Mind you, you will go a long way to find anyone who has either actually read the report or considers the Senate's efforts as anything worthy of other than dismissal.
Which commentators would they be? Like most commentators they love listening to the sound of their own voice.
The politics is a bit of give away in the heading
Senate Pel-Air report.
If it wasn't for the Senate report we would not be discussing the contents of the CVR/FDR now.
The co-pilot would have been interviewed by the ATSB and would not have had a choice in the matter under the TSI Act. The details of that interview are not permitted to be released into the public arena however if there is any discrepancy between what was said at the interview and what is on the CVR then that may be included in the updated report.