mm43, thanks again for your effort and analysis.
I am hoping that the next BEA report contains the transcript of all relevant communications between ATLANTICO and the three flights immediately preceding and following AF447 on the track that night (IB6024, AF459, and LH507). LH507 preceded AF447 by 20 minutes and deviated west because of the weather appearing on its radar. Presumably communication about that deviation between LH507 and ATLANTICO should have been overheard by AF447, as AF447 should have been on ATLANTICO's frequency from 0133 until 0220 hours.