Meghan and Harry announced their intention to step down as senior royals in January 2020 stating their intention to become “financially independent”
The couple moved to California, Meghan’s home state, shortly before it went into coronavirus lockdown in spring 2020
According to Emily Andrews, the Mail on Sunday’s royal editor, this move led William and Charles to reconnect.
She explained that in response “Charles and William have come together to work with a common purpose”.
The royal insider added: “A key factor in the two men’s maturing relationship, of course, has been Harry’s move to California.
“Charles’s initial inclination was to try to make a half-in/ half-out Royal role work for Harry and Meghan.
“But ultimately he united with William and the Queen, who, at the so-called Sandringham Summit to discuss the crisis in January last year, told the Sussexes that a hybrid option would not work.”
At the Sandringham Summit, Harry and Meghan would drop their ‘Sussex Royal’ brand and stop using their HRH titles.
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Harry also lost a number of military titles after stepping down.
After resettling in California, the Sussexes agreed to a number of major commercial deals.
The couple have agreed to produce films, documentaries and children’s shows for streaming giant Netflix.
They also launched the Archewell Audio podcast on Spotify.
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Ms Andrews revealed Kate also played a key role in strengthening the relationship between her husband and father-in-law.
She wrote: “Kate, 39, has also been instrumental in fostering the father/son relationship.
“Organising Charles’s family portrait for his 70th birthday with Harry and William, who had fallen out spectacularly, did not prove easy.
“She helped make it happen and ensured that all the children synchronised smiles for the camera.
“Last summer, Kate made sure that her family was back in time from their holiday to the Isles of Scilly to coincide with Charles’s stay, so ‘Grandpa’ could give birthday presents to seven-year-old George.”
William and Kate are currently staying at Anmer Hall, their Norfolk home, along with their three children.
They moved out of London shortly before the third coronavirus lockdown was imposed.
Both Charles and William caught coronavirus last spring though William only revealed this publicly last November to avoid causing undue panic.