Prince William, Prince Harry, Meghan Markle and Kate Middleton
Pictured [L-R]: The Duke of Cambridge, Duke of Sussex, Duchess of Sussex and Duchess of Cambridge arrive at Westminster Abbey to attend a service to mark the centenary of the Armistice on Nov. 11, 2018 in central London. Paul Grover/AFP/Getty Images

Prince Harry and Meghan Markle’s feud with Prince William and Kate Middleton may have already been confirmed by a key comment even before it made headlines.

Body language expert Judi James said that she knows exactly when the first signs of a feud emerged, and it happened while the royal couples were working on the Royal Foundation together.

“It was relatively easy to see this foursome wasn’t going to work out as a team when they first launched on stage. There was that memorable moment when the ‘team’ were asked if there had been conflicts and William immediately let out that ‘Oh yeah’ reply that was almost a groan,” she told Express.

During the awkward discussion, Markle and Middleton laughed at the question knowingly. The Duchess of Sussex even went as far as allowing her hair to form a cut-off to hide her facial expression.

According to James, it was also significant how Markle touched Prince Harry in the way that a person does when they’re trying to make light of any arguments or rifts.

Meanwhile, the root cause of Prince William and Prince Harry’s falling out has been revealed months ago. Royal expert Katie Nicholl said that Prince Harry disliked how Prince William tried to talk him out of marrying Markle.

While speaking with Entertainment Tonight, Nicholl said, “It’s absolutely the case that the brothers did fall out. I was told by a very senior royal source that they weren’t talking to each other at one point.”

After rumors of a feud circulated, Prince William and Prince Harry announced that they will be splitting their charities. The Royal Foundation that the siblings put up in 2009 will now only be handled by the Duke of Cambridge.

The move led fans to speculate that Prince William and Prince Harry have not patched things up until today. But experts said that the decision has more to do with Prince William's future role as King.