Satellite and related
Willow,
The document released by Malaysia on 25/03/14 is titled:
Information Provided to MH370 Investigation by UK Air Accidents Investigation Branch (AAIB)
The first sentence reads "On 13 March we received information from UK satellie Company Inmarsat...." (my emphasis on "we"
The second sentence reads" Inmarsat UK has continued to refine this analysis and yesterday the AAIB presented it's most recent findings,..."
The Satellite data originated from Inmarsat, and that data (and it's findings) were presented to Malaysia by AAIB.
I'm not certain that any of us can attest that NTSB reviewed or approved the Inmarsat analysis.
You could question whether AAIB reviewed the Inmarsat data, but it is reasonable to presume that the AAIB did so.