Prince William and Prince Harry reportedly didn’t try to hide their personal issues with each other during a recent outing with their father, Prince Charles.

On Thursday night, the Prince of Wales, Duke of Cambridge and Duke of Sussex reunited to attend the premiere of Sir David Attenborough’s new Netflix documentary. The royal trio sported matching black tuxedos in their rare joint engagement without their wives. However, many noticed that Prince William and Prince Harry appeared distant from each other.

According to body language expert Peter Clayton, the royal brothers arrived in the same car but left separately. They apparently barely exchanged words and avoided eye contact.

Clayton said that normally, Prince William and Prince Harry would always walk together behind Prince Charles. They would greet the organizers and supporters and share a small laugh to ensure that they approach the people smiling and looking jolly. But this was not the case in their last engagement together.

“What it does suggest is that whatever has happened between them is a more serious falling out,” Clayton said.

He continued by saying that Prince William and Prince Harry’s behavior during the event was very different from their past interactions. If they had not just been seen stepping out from the same vehicle together, one would think that they arrived in separate cars because they kept their distance and didn’t exert effort to look amicable.

“There isn’t any attempt to look at each other and they appear to be intent on maintaining that distance,” the expert added.

Prince William and Prince Harry have been spotted joining the royal family on different engagements lately, but they didn't seem to be in their usual jolly moods. Back in December, they also reunited with wives, Kate Middleton and Meghan Markle, as well as the rest of the members of the Firm, for the royal family’s traditional Christmas morning service.

The outing comes as rumors of a rift involving the two families heated up. To the surprise of many, the Duchess of Cambridge and the Duchess of Sussex were photographed smiling and chatting together recently, putting all rumors of their alleged beef to rest.

However, unlike the two duchesses, Prince William and Prince Harry didn’t look at each other. They didn’t talk like they normally did and instead appeared ill-at-ease.

Prince Charles Prince William and Prince Harry
Prince Charles, Prince William and Prince Harry visit the tunnel and trenches at Vimy Memorial Park during the commemorations for the centenary of the Battle of Vimy Ridge on April 9, 2017 in Vimy, France. Getty Images/Tim Rooke