An awful lot is being made about about the 4 minutes of maintenance messages that were broadcast from the ac. But, would I be right in thinking that these mesaages alone won't provide an awful lot of valuable information, i.e. they won't tell the sequence of events that took place leading to the loss of the ac.
They might provide clues but on their own (without the ADR and CVR data) there is no context or chronological information.