Wunala
As yet it has not been established that the two aircraft "almost hit". It seems that you are convicting one crew based solely on the rumours on PPRuNe and some media reports.
If they were my crew, I'd investigate and then take appropriate action, not shout at them, not get angry, not cover up. All of those responses are inappropriate.
Unless one or both crew were behaving in a wilfully negligent manner, it is reasonable to assume that at worst, a mistake was made. The perfect pilot has yet to be born.
Sultanas and Gin,
I don't follow the "turned off for normal cabin noise abatement".
Would you please elaborate?