Caz,
I first found out about "burden of proof" for dead aircrew on my first IFS course in London 1985.
It was stressed very heavily on that course, and I have never forgotten it.
Now were are we again in this discussion?
You started off by saying that all of the RO's "Findings" "Complied" with AP 3207.
The man who wrote the relevant section AP 3207 says they did not, and has had this section approved by the AFB. So his rank is of no importance.
Either they respected and complied with the AP or they chose to disregard it.
Which is it.