William, 38, and Harry, 36, walked in the same row in the procession, but were separated by their cousin, Peter Phillips, the son of Philip and Queen Elizabeth's only daughter, Princess Anne.
Watching the brothers walk together behind the coffin of Prince Philip brought back memories of a lasting image of William and Harry -- the two brothers walking behind the coffin of their mother, Princess Diana, at her 1997 funeral.
After Diana's unexpected death following a car crash in Paris, William, then 15, and Harry, then 12, walked behind her coffin in a procession that also included their father, Prince Charles, Prince Philip, and Diana's brother, Charles Spencer.
When Downing Street officials suggested that William and Harry might walk behind their mother's coffin, an anguished Philip reportedly bellowed into the phone, "F--- off. We are talking about two boys who have just lost their mother."
In that interview, Harry described himself and William as being on "different paths."
"The relationship is space at the moment, and, you know, time heals all things, hopefully," Harry said. "I love William to bits. He's my brother. We've been through hell together, and we have a shared experience, but we were on different paths."
Following Prince Philip's funeral Saturday, as family members walked out of St. George's Chapel, Harry and William were seen walking side by side, alongside William's wife, Duchess Kate.