And the controller speaking to Dakar states "Mach 82" But this estimation is not correct at 0.82. It should have been 0211 something like this.
Squawk_Ident and mm43, I think this is unrelated with the accident but since you are doubting the positions/timing of AF447, just consider that, for whatever reason, the estimate for ORARO we read in the BEA's report is almost certainly erroneous. It should be about 0204 and that makes all other positions/estimates consistent with a GS of about 470 kt. In particular, 0220 for TASIL was correct.