THE Queen adored Harry "right to the end" and had hoped the rift between he and his family would be healed, a royal historian claims.
But however grand her love, Hardman said the Queen would have been hoping Harry and Meghan put their woes to one side.
He said: "I think she was one of the conduits between Windsor and California, and it would have been one of her dearest wishes that [the family] patch things up."
A source told said the Fab Four's reunion to lay flowers at Windsor was "awkward" and both couples "found it hard".
They added: "They were in a stoic spirit of just getting through it for the Queen."
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Prince William's eleventh hour olive branch to Harry for their reunion led to a tense 45 minute delay so the US-based couple could be included in the walkabout.
A royal source said: "It was an important show of unity for the Queen.”
William and Kate were originally expected to meet the public from 4.30pm in Windsor.
The foursome then emerged from the same car at 5.15pm to the surprise of the waiting crowds.
They spent 40 minutes looking at the sea of tributes left for Her Majesty outside the gates of the Berkshire castle.
Before the display of unity, brothers had barely spoken for two-and-a-half years after the Sussexes left for the US.
And it was the first time the couples have been seen in public as a foursome since Commonwealth Day in March 2020.
A senior Palace source said: “The Prince of Wales invited the Duke and Duchess of Sussex to join him and the Princess of Wales earlier.
“The Prince of Wales thought it was an important show of unity for the Queen at an incredibly difficult time for the family.”