HARRY and William's "peace talks" at their grandfather's funeral were "doomed to fail" - because Harry had been plotting his new bombshell documentary the whole time, an expert has claimed.
The Duke made a series of extraordinary new allegations in programme The Me You Don't See - including that father Charles left him to "suffer" amid "total neglect" for his mental health.
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And commentator Phil Dampier says Harry would have been well aware that he'd be blasting his family in the documentary when he attended his grandfather's funeral.
He said it means any attempts at reconciling with his father and brother after the service were "pointless".
Harry said:
- Prince Charles didn't 'make it right' for him and brother Prince William after their mother's car crash death in 1997
- He turned to drinking and drugs in his late 20s, admitting: 'I would drink a week's worth in one day'
- As a child he was 'angry' at the public for the huge outpouring of grief after Diana died at the age of 36
- He's convinced the media 'will not stop' until wife Meghan Markle 'dies'
- Meghan resisted suicidal thoughts because she knew it would be 'unfair' for Harry to lose another woman in his life
- Some of Archie's first words were "grandma Diana"
The Duke of Sussex "must have known" what he planned to say about the royals "probably many months" before the documentary was released, Mr Dampier said.
"It means any attempts there were after the funeral to have meaningful peace talks were pointless and doomed to failure," he said.
"It's making it extremely difficult for William and Charles to attempt to heal any kind of wounds."
William, Harry and Kate were pictured walking together after the service, while it was understood Charles and Harry had also spoken privately.
Charles was also said to be "desperate for a reconciliation" - although William was reportedly deeply upset, even after meeting his brother face-to-face for the first time in a year.
But Mr Dampier said Harry's new claims will cause further damage in the family.
"The royals will be dismayed and Charles and William will be tearing out what's left of their hair," he said.
"It just seems to be another day and another whinge.
"We need to be respectful of Harry's mental health, of course, but you do wonder - when he is going to stop?
"How much longer he can do this for?"
Harry is due to return to the UK in the summer for the unveiling of a statue dedicated to his late mother.
But Mr Dampier said: "I have grave doubts about whether Harry will come back.
"If he does, it will be a very difficult atmosphere."
Harry's biographer Angela Levin called his appearance "phoney and embarrassing".
She told : "Harry seems to be stuck in this and some of the things he said about his father, for example, that he didn't have it very good as a child, therefore Harry and William must have it too.
"I find that extremely hard to believe because Prince Charles did his absolute best.
"Maybe he wasn't the best parent but I don't know many people who are perfect parents.
"I watched it all and I felt so embarrassed that he would go through this."
Elsewhere, royal commentator Richard Fitzwilliams told Sun Online the Royal Family face huge difficulties in how to move forward - particularly after the Queen requested that personal problems were dealt with out of the public gaze.
"There is for the Royal Family a very, very real problem about the way the Sussexes are addressing their unhappiness," Mr Fitzwilliams said.
"The Queen urged that the issues be dealt with privately as a family. Meghan and Harry don't seem to be heeding that at all."
opened up about his struggles with his mental wellbeing and the trauma that haunts him after the death of in the new doc.
And he discussed his wife's mental health as well as his own - and said Meghan didn't give into her suicidal thoughts because of how "unfair" it would have been to him after his mother died.
He singled out Charles for particular condemnation - .
"My father used to say to me when I was younger, he used to say to both and I, 'Well, it was like that for me, so it’s going to be like that for you'," he said.
He said he was never given the space or time to mourn Diana's death - and eventually turned to drinking and drugs to numb his lingering pain.
And he revealed he decided to get therapy after he "acted like a 12-year-old" during a huge row with Meghan - and feared he could lose her.
The was released on Apple TV in the US on Thursday night and the UK on Friday morning.
It was released in full online just four hours after Prince William issued an extraordinary attack on the BBC for their Panorama interview with Diana.
A report found Martin Bashir lied to secure the interview, a betrayal William says deepened Diana's sense of isolation and fear in the two years before her death.
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In the interview, watched by 23million, the princess infamously told Bashir "there were three people in the marriage" - a reference to Charles' relationship with Camilla Parker Bowles.
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During a deeply moving statement recorded on video, William said the lies about the Royal Family “played on her fears and fuelled paranoia” - while Harry said the probe was the "first step towards justice" for their mum.
The Duke of Cambridge told of his “indescribable sadness” Diana had been tricked - and said he believes "the deceitful way the interview was obtained substantially influenced what my mother said".