The Duke of Edinburgh’s biographer Gyles Brandreth appeared on “Lorraine," a popular British TV show on Wednesday, days after the longest serving consort’s passing. The royal author was invited on the show to spill some (pleasant) beans about the Duke of Edinburgh and what his relationship with the Queen actually looked like. Turns out, Prince Philip, as expected, was really fond of his wife and the couple was barely at loggerheads, except for one complaint.

“He said to me, ‘God, she’s never off the phone. Never off the phone. Who is she talking to?’” said Brandreth on the show, as cited on Daily Mail. “It was the only time he ever complained about the queen. He knew his whole life was supporting the queen. He never put a foot wrong, he always turned up right day, right uniform, on time, one step behind her.”

Their marriage, which spanned over seven wondrous decades, has been pegged as one of the most successful marriages in the history of the British Royal Family. Brandreth maintained that he cherished the unforgettable 40 years of friendship he had with the prince.

The reigning monarch, who has been as loved as she is revered for her affable demeanor, was loving called ‘Lilibet’ by Philip within the confines of their palace. Brandreth also revealed that the Queen rang up her racing manager during the evenings to talk about her horses—animals that she dearly cared about.

Philip breathed his last on April 9 at age 99, he is said to have died peacefully in his sleep. All the funeral arrangements that followed weeks later were carried out in accordance with his last wishes.

As reported in Fox News, the Duke fulfilled over 20,000 royal engagements to boost British interests at home and abroad. A philanthropist by nature, Philip helmed hundreds of charities, founded programs to encourage schoolchildren to participate in outdoor activities.

 The Queen, who has never really been the kind to flaunt her affection publicly, had openly mentioned that the Duke was “her rock” in a large gathering.

Philip was a proactive working royal until the year 2017, after which he decided to retire from his services owing to a spate of health concerns.

Queen Elizabeth, Prince Charles and Prince Philip Queen Elizabeth II; Prince Philip, Duke of Edinburgh; and Prince Charles, Prince of Wales, arrive for the funeral service of Patricia Knatchbull, Countess Mountbatten of Burma, at St Paul's Church in Knightsbridge on June 27, 2017, in London, England. WPA Pool/Getty Images