During his recent visit to London, Prince Harry missed a meeting with his father, King Charles, sparking curiosity. A royal family confidant provided details.

In the UK last week for the 10th anniversary of the Invictus Games, the Duke of Sussex, 39, reportedly skipped meeting his estranged father due to the king's "full" schedule. According to royal family sources, Harry's public criticism of his stepmother, Queen Camilla, may have influenced the decision.

In his memoir, "Spare," Harry called Camilla "dangerous" and "the villain," which strained relations, reports said. The Duke's claims that Camilla leaked news and manipulated public opinion have strained family relations.

Harry's meeting demands, including attendance restrictions, are rumored. According to royal pundit Charlotte Griffiths, Charles likes visits with Harry that include Camilla, which could cause scheduling issues.

Harry returned to London for the first time since meeting his father after the king's cancer diagnosis in February and learning of Kate Middleton's cancer diagnosis in March.

Harry's memoir affected the royal family, especially the king and queen, according to royal historian Richard Fitzwilliams. The "Spare" discoveries wounded Camilla, and Harry's portrayal of her in the book strained family dynamics.

Harry's relationship with his father and stepmother is under examination as the royal family navigates these difficult dynamics, with each action and comment stoking conjecture about their future.