Prince William said that Kate has been giving him "non-stop grief" after the event they attended together at the weekend.
The couple watched the Six Nations rugby match between England and Wales.
England won the thrilling contest 20-10 which marked their first win in Cardiff since 2017.
The Princess of Wales is the patron of England’s Rugby Football Union whilst Prince William is the patron of the Welsh Rugby Union.
The Princess of Wales is the patron of England’s Rugby Football Union whilst Prince William is the patron of the Welsh Rugby Union.
Joe Giddens
Kate replaced Prince Harry in the role after the Duke of Sussex stepped down as a working member of the Royal Family.
When asked if he enjoyed the match between England and Wales, Prince William responded: "Not a lot. We’ve been talking about it all weekend."
He added: "I’ve been getting non-stop grief all weekend about that."
His visit to Wales comes as polling shows the Prince William does have the support of the majority of Welsh people.
Despite controversy surrounding the title "Prince of Wales", two-thirds of adults in a YouGov study supported Prince William in his role, according to a poll conducted soon after Queen Elizabeth II's death.
However, the same poll suggested only 19 per cent of adults wanted to see a grand investiture ceremony for the heir to the throne, similar to the now-King Charles' in 1969.
It is understood there are no plans for an investiture ceremony for Prince William.
Two-thirds of adults support the Prince of Wales title being given to Prince William, according to a poll conducted soon after Queen Elizabeth II's death.
David Davies
It has been announced today that the Prince of Wales has become Royal Patron of the Wales Air Ambulance charity.
It comes as The Prince and Princess of Wales visit the charity’s headquarters today.
Prince William and Kate, become the Prince and Princess of Wales in 2022 following the death of Queen Elizabeth II.
