Unfortunately at this juncture even if they find the jet the CVR will hold zero relevant data. 120 min of recording on the triple .
That’s if we consider both pilots incapacitated.. so effectively last few hours of flight nothing would be heard on the CVR.
IF we considered a dire electrical problem could the pings be actually leading us the wrong way. The French may be onto something here.....
D-FDR should give vital info ..