As princes William and Harry walked behind the coffin of the Queen in London it couldn't help to bring to mind a heartbreaking scene 25 years ago when their mother died.
In effect, the two princes were reliving an eerily similar ceremony to that of Diana, Princess of Wales.
Prince William has said walking behind his mother's coffin was "one of the hardest things I've ever done".
The procession through the streets of London took the body of Elizabeth II from Buckingham Palace to Westminster Hall in the Palace of Westminster, where it will remain until Monday's funeral.
Hundreds of thousands of people are expected to line up to pay their last respects to the monarch who died last week after 70 years on the throne.
Long planned in advance, the Queen's funeral was known under the code name "Operation London Bridge".
When Diana died there was no plan in place for a grand funeral because – by that point – she was divorced from Charles and no longer a working royal.
But an outpouring of grief led the royal family and Diana's own Spencer family to hastily adapt Operation Tay Bridge.
While it did differ here and there from London Bridge, the elements of that plan and Tay Bridge have much in common.
That included the solemn procession, with close family members, walking behind the coffin.
In 1997, the two then boys were joined by their father Charles, the now late Duke of Edinburgh, and Earl Spencer, the younger brother of Diana.
All wore black suits and had their heads bowed for much of the procession.
Yesterday Prince William and Prince Harry were joined by the now King Charles III, Princess Anne and her son Peter, Price Edward and Prince Andrew.
The route traversed many of the same streets as Diana's cortege, including The Mall and Whitehall as well as passing Buckingham Palace.
The thousands of onlookers lining the route would have been familiar from 1997.
One of the major differences was the uniforms. Working royals Anne, William and Edward were in ceremonial military garb yesterday; Harry and Andrew were not.
At Diana's funeral, The Duke of Edinburgh was reportedly reluctant to let his two grandsons have to go through what could be a traumatic experience of publicly walking behind their mother's coffin. But he relented, declaring"I'll walk if you walk".
Harry had said walking behind the coffin, when he was just 12, was something no child "should be asked to do".
But by 2017, in an interview with the BBC, his view had modified somewhere.
He said he didn't "have an opinion whether it was right or wrong," but in hindsight he was glad to have been part of the funeral ceremony.
Prince William had said walking during the procession was a "very long, lonely walk" and "one of the hardest things I've ever done".
He added that his floppy teenage hair helped him block out much of the intense scenes around him.
"I felt if I looked at the floor and my hair came down over my face, no-one could see me.
"It wasn't an easy decision and it was a sort of collective family decision to do that … there is that balance between duty and family, and that's what we had to do."
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