I found it interesting how the producers having researched the published report map out a program flow coupled with ideas for drama insertions, then fish for expert interjection to support the flow.
It's hard to find experts per accident type willing-and-capable enough to communicate effectively.
The best witnesses are those close to the accident (surviving passengers, crew families etc.) that any words they use draw us to watch the show though.
To be avoided are forced drama from technical experts.
I've seen cases where they had to redo their pre-conceived production flow when the technical expert wouldn't support it in their words. This gave me trust to continue watching more shows