Princess Diana is the 'only chance' once-inseparable brothers Harry and William have at ending their feud and making peace, a royal observer has suggested.
It emerged that Harry spoke to William and their father Prince Charles over the weekend for the first time since the Duke and Duchess of Sussex's explosive interview with Oprah Winfrey.
However, the conversations were "not productive", claimed Oprah's best friend Gayle King.
Prince Harry, 36, confirmed during his and wife Meghan Markle's tell-all with Oprah that his rift with William, 38, continued and the brothers were on "different paths" with "space" between them at the moment.
Do you enjoy reading about the Royal Family? Sign up for all the best royal news from the Mirror here.
The Duke of Sussex, now living in Los Angeles with Meghan and one-year-old son Archie, also told how he felt "really let down" by their father following Megxit.
On Mother's Day, the Cambridges shared images of hand-drawn cards that their children Prince George, seven, Princess Charlotte, five, and Prince Louis, two, had made for "Granny Diana".
Charlotte's card read: "Papa is missing you."
Harry arranged for flowers to be laid on Diana's grave, in the grounds of her family's home, Althorp House, in Northampton, on Mother's Day.
It has been claimed that Harry and William have not seen each other in a year following the awkward Commonwealth Day service in March 2020, which was the Sussexes' final royal engagement before they quit as senior royals.
They are expected to reunite this summer for the unveiling of a statue to Diana, who died aged just 36 in a car crash in Paris in August 1997.
The statue will be revealed in the Sunken Garden at Kensington Palace on July 1 on what would have been thePrincess of Wales' 60th birthday.
Last week, sources told Russell Myers, the Mirror's royal editor, that William and Harry are prepared to "put on a united front" and stand together at the event, which will be held near to Meghan's due date. She is pregnant with a girl.
This summer's reunion in front of journalists could prove to be "very awkward", but Diana "would surely want her sons to rediscover the special bond she fostered between them, as brothers in arms", royal commentator Camilla Tominey wrote in the Telegraph.
It was suggested Diana was the 'only chance' the brothers have at mending their relationship.
Palace sources told the newspaper that the Cambridges remain "hopeful of a reconciliation" and "want peace" with the Sussexes, but one claimed trust had been "lost".
Royal biographer Penny Junor said the Cambridges sharing photos of their children's Mother's Day cards to "Granny Diana" was William's way of saying "I am Diana's son, too".
She told the Telegraph: "At the moment, Harry seems to have taken ownership of the whole story.
"He is calling the shots on what this family is all about and invoking Diana. But what he's actually done is effectively put a bomb under William's future. He's done such damage to his family."
She believes the relationship between Harry and William may be "irreparable".
Harry talked about Diana during the Oprah interview, saying she wouldn't be happy with the way he and Meghan were treated while stepping away from royal life.
He said: "I think she would feel very angry with how this has panned out and very sad, but ultimately, all she'd ever want is for us to be happy."
He added: "I brought what my mom left me.
"And without that, we would not have been able to do this, so touching back on what my mother would think of this, I think she saw it coming.
"I certainly felt her presence throughout this whole process."
Harry also compared Meghan, 39, to his mother.
He told Oprah: "You know, for me, I'm just really relieved and happy to be sitting here, talking to you with my wife by my side because I can't begin to imagine what it must've been like for [my mother] going through this process by herself all those years ago."
He added: "My biggest concern was history repeating itself."
American breakfast show presenter Gayle King said she had spoken to the Duke and Duchess of Sussex and was told talks between Harry and his brother and father were “not productive”.
Speaking on CBS This Morning on the fallout from the couple’s Oprah Winfrey interview, King said on Tuesday: “I’m not trying to break news, but I did actually call them to see how they were feeling and it’s true Harry has talked to his brother and he has talked to his father too.
“The word I was given was that those conversations were not productive but they are glad that they have at least started a conversation.”
King claimed the Royal Family had not contacted Meghan following the couple’s interview with Oprah.
She said: “I think what is still upsetting to them is that the palace keeps saying they want to work it out privately and yet they believe these false stories are coming out that are very disparaging against Meghan still.
"No-one in the Royal Family has talked to Meghan yet.”
The monarchy was plunged into crisis following the shocking allegations of racism made by the Duke and Duchess of Sussex in their Oprah interview.
Harry and Meghan accused an unnamed royal - not the Queen nor Prince Philip - of raising concerns about what colour their son Archie's skin tone would be before he was born.
Meghan also told of how she begged for help when she was suicidal, but said the institution gave her no support.
The Queen said the issues were concerning, but that "some recollections may vary" and the matter was a family one that would be dealt with privately.
The Duke of Cambridge, meanwhile, defended the House of Windsor, saying on a visit to a school in east London: "We're very much not a racist family."
