PJ2, "The report does not discuss any such relayed position reports or the attempts at same. Lufthansa 507 was, as is SOP, listening on 121.5 and reported hearing nothing from AF447."
This is why some of us figure the problem began well before 02:10. Now, I am a communications oriented critter. I do not seriously expect a 121.5 call once the fit hit the shan. I do expect attempted communications with other planes to get Dakar informed that I'm about to enter their control space when Dakar failed to answer. I'd try the enroute plane to plane frequency and then 121.5MHz, repeatedly. It is apparent no such attempt was made or else a whole bunch of planes in the area had failed to follow proper communications protocols or had snoozing cockpit crews. The simplest answer to this dilemma is that the problem began, probably not long after 01:35 and finally brought the plane down.
My imagination fails me when I try to describe such a problem, however.
So I am left with the question, "Why was the plane radio silent from 01:35 onwards except for ACARS messages?"