Until I hear the facts from the inside
That is unlikely to ever happen. All you get from the inside is company spin. Then from the employees you get their version. Somewhere in between is the truth, but it is usually closer to what the staff say than the company...
As for the non-response from the EK pilots, more likely than not that 99% of the available brain function was dedicated to remaining upright after a ULR so there was nothing left for hearing...
I have had times where someone was standing in front of me speaking to me and I did not see/hear them I was so damn tired... in other words... the F word that the bouncy castle loves to pretend doesn't exist.
Go do 100+ hours a month then see how you do after a ULR flight... it's not pretty