Prince Charles 'walked and talked' with Prince Harry at Windsor Castle after Philip's funeral before taking part in a 'family summit', a source said today.
The Duke of Sussex is now set to miss the Queen's birthday by flying back to Los Angeles today, it is claimed. It is not clear what flight he may return on but there is a British Airways one leaving later today.
The source told MailOnline this morning: 'Harry and Charles walked and talked at Windsor after the funeral. My understanding is that Harry goes back today. They talked with Harry as a family.'
It is not clear what was discussed at the meeting, but the source said they began the 'long task' of looking at condolence letters send from around the world.'
It comes as a royal expert said that the Queen's new puppies will play an important role as she continues to mourn for her husband of 73 years.
Prince Harry (left) and Prince Charles (right) at Philip's funeral in Windsor Castle on Saturday, where they walked behind his personalised Land Rover hearse
Harry made the 10-hour flight to Britain for the funeral this week while his wife Meghan - who is around seven-months pregnant with their second child - remained in LA.
Arrivals from the US must quarantine for 10 days upon landing - but can leave after five days if they provide a negative test under the Government's Test to Release scheme.
Harry was allowed to attend the funeral at St George's Chapel in Windsor on Saturday in line with Government rules that make exceptions for such occasions.
He arrived in England last Saturday, which means - should he have tested negative - the duke no longer needs to isolate in Windsor.
He is understood to be based in Frogmore Cottage for the rest of his stay. He and Meghan lived in the house on the Windsor estate during their time as senior royals.
It is there that he is said to have met Prince Charles, just weeks after the Sussexes plunged the monarchy into crisis when they accused the royals of racism and the institution of failing to support Meghan when she was suicidal in their Oprah Winfrey interview.
Following the bombshell tell-all - which included Harry's claim that he needed to 'educate' his relatives - Prince Charles was said to be 'deeply hurt' but resolved to 'mend the broken relationship' with his son.
Prince Harry speaks to Prince William as they leave the service at St George's Chapel in Windsor Castle on Saturday afternoon
The source told MailOnline this morning: 'Harry and Charles walked and talked at Windsor after the funeral. My understanding is that Harry goes back today. They talked with Harry as a family.' Pictured: Prince Philip's funeral
Poignant images from Philip's funeral on Saturday showed the Queen sitting alone in St George's Chapel at Windsor, and on Wednesday she will mark her 95th birthday - only able to meet those outside her household in the open air.
But the grieving Queen will have two lively new companions - a corgi called Muick and a dorgi named Fergus - running around her feet and providing a 'distraction', along with her elderly dorgi Candy.
Joe Little, managing editor of Majesty Magazine, said: 'The thinking was enough was enough, and that she was getting too old for new dogs and who would look after them when she was gone.
'But clearly that decision was reversed and, as it turned out, it probably is very fortuitous. I think it's useful to have these puppies in her life now as way of a distraction.'
The Queen's life-long love of horses and dogs is well known and, while Philip spent his final period in hospital, it emerged the Queen had been given the puppies.
Mr Little believes that, while Buckingham Palace will remain the seat of the royal court, the Queen may make Windsor Castle her permanent home, travelling to the capital for official events.
The Queen's birthday will fall during the period of royal mourning so any public events to mark it - such as the release of an official picture - are likely to be cancelled.
Mr Little said: 'She will mark her first birthday as a widow, and 95 is quite a significant birthday.
'I don't think there would have been a fuss made of it, but nevertheless 95 is quite something. This is going to be a private day for her and that's how it should be.
'Royal mourning continues until Friday so that makes it even more of a sombre occasion.'
In paying tribute to Philip, who died peacefully at Windsor on April 9, aged 99, members of the royal family have been rallying to the Queen's side and said they will continue to support her in the future.
The Queen returned to public duties a few days after the death of her 'beloved' husband and is expected to return to a full diary of official events after the period of royal mourning ends this week.
Frogmore Cottage was Harry's old address where he previously lived with his wife Meghan Markle
Mr Little added: 'I think she will be personally devastated by this, but I don't think the death of the Duke of Edinburgh, her husband of 73 years, is going to impact on her working role.
'I think, as monarch, although she doesn't have him there for guidance, I think her role will continue pretty much as it has for the last 69 years.
'There's the public queen and there's the private queen, and she's great at being able to compartmentalise.'
The Queen has been spending the lockdown at Windsor Castle with a reduced number of staff and aides dubbed HMS Bubble and, under Covid regulations, will be restricted in the number of birthday well-wishers she can see outside.
But Philip's funeral would have provided the opportunity for her to speak with the Duke of Cambridge, the Duke of Sussex and her other grandchildren.
Asked about the funeral during a briefing, the Prime Minister's official spokesman highlighted that Boris Johnson had observed the national minute's silence in memory of the duke on Saturday afternoon.
He added: 'Alongside many of us across the country, he thought that the funeral was a poignant and fitting tribute to a much-loved and highly respected public figure, whose extraordinary life we will forever remember with gratitude for his decades of selfless service to this country.'