You can expect the CVR and FDR being unobtainable for all the usual reasons. Some of those are not wrong.
QAR is a different beast, though the data might not be allowed to leave a certain office or even a computer station. That information, alongside honest best crew recollection, will uncover the dynamics in very precise detail.
Last edited by FlightDetent; 17th Feb 2023 at 16:47.