William, 38, was the one to request that their cousin, Peter Phillips, walk in between them since the two brothers have not been on the best terms ever since his tell-all with Oprah Winfrey aired on March 7, the Daily Mail reported.
Ever since Harry returned home, he has experienced "a great deal of frostiness" from his family members, a source said.
Queen Elizabeth II's daughter, Princess Anne, Prince Edward and his wife, Sophie, Countess of Wessex, didn't acknowledge Harry during the April 17 funeral service, the paper claimed.
"As far as the others are concerned, there is a deep sense of protection towards the Queen and resentment towards Harry. There is little sympathy for him after what he and Meghan said on Oprah," the insider said. "They are still very upset. They are putting on a united front for the Queen. They all think he has behaved appallingly."
"Ironically, the only one who has expressed any sympathy towards him is Prince Andrew," one insider shared about the royal, who stepped back from his duties in 2019 after his friendship with late pedophile Jeffrey Epstein was exposed.
"He knows from Sarah Ferguson — and now first-hand — how it feels to be the outsider, which Harry very much is," the source said.
Meanwhile, Harry is "just doing what he's told and getting on with it," the insider added.
However, Harry and William appeared to put their differences aside when they walked out of the chapel together.
William apparently reached out to his younger brother before the funeral to touch base about where they stand.
“As he did with his mother, Princess Diana, William has once again taken on the role as peacekeeper in the family. He knows his brother, Harry, is a hot-head and has a nasty temper; William’s biggest concern at the moment is avoiding an ugly scene at his grandfather’s funeral. Harry is very unpredictable and still see’s himself as the victim, rather than the person who called his family racists,” a source told The Royal Observer. “The plan is get to through Saturday without causing a scene, if for nothing else but showing the Queen, who is 94, a little respect.”