That seems to be what royal biographer Robert Lacey is suggesting in his new book, Battle of Brothers: William & Harry. The biography covers the tumultuous time leading up to Harry and Meghan's departure from England, including those behind-the-scenes conversations that allegedly left a bitter taste in Queen Elizabeth, Prince Charles and William's mouths.
In a portion of the book previewed by The Daily Mail, Lacey claims that his sources describe William as thinking "not too highly" of his baby brother, especially concerning the arrival of nephew Archie Harrison.
Lacey confirms that it took William and Kate Middleton over a week to meet the newborn at his home of Frogmore Cottage, and says that their decision not to bring along Prince George, Princess Charlotte and Prince Louis was a sign of their displeasure.
Additionally, Lacey writes that the brothers' relationship further soured when William learned that Meghan and Harry weren't revealing the names of Archie's godparents. As Lacey put it, "'Friends' of William suggested that the future king, only five places clear of Archie in the order of succession, could not comprehend how such a basic matter of constitutional principle had been misunderstood.
According to Lacey, this came as a shock to the royals and other aristocrats because these individuals, or sponsors as he called them, are meant to have great influence over the child and could prove to be crucial if the line of succession ever dwindled down to just Harry and Archie.
Let it be known, however, that Archie and Harry are seventh and sixth in the line to the throne, respectively.
E! News reached out to Harry's rep for comment but has not heard back.
NBC News, which is part of the NBCUniversal family along with E! News, has not verified the author's claims.
Since Meghan and Harry's official departure from the royal family in March, they've largely been separated from their relatives across the pond because of the coronavirus pandemic. But it's been reported that the brothers have kept in touch and communicated as they've celebrated birthdays and other milestones in recent months.
Battle of Brothers will be released Oct. 20.