Hawass banned someone for being incompetent!! Man, I love it every time I read that!
Back to seriosity, what makes you think Nefertiti was banned, dying alone with her ‘stone artist lover’?
I think that Tiy needed to split Akhnaton and Nefertiti to hold on to the power she hade,
and to do that she planted the story abut Thotmes and Nefertiti having an affair.
Then she was banned from court and disappeared from records as we know
I also think that this fitted the plans of Horemheb to be able to take over the throne.
He was a smart and patient man who I believe killed first smenkhara and later killed King Tut, He nowed that Ay was a old man
and soon would be dead he only hade to make sure there was no children
of Ay to claim the throne and he finally would be the Pharaoh him self.
And maybe Joan did discover something... but it was not Nefertiti
but perhaps it was Smenkhara? Why was he buried as a queen??
well it is common among royalties to have some homosexual tendency..
and maybe Smenkhara hade those tendency and actually was buried
like a queen to be dishonored by the Gods...
This is of cause just speculation of me but maybe there is some truth
abut it and think what a shame for Joan to miss this