Camilla, Duchess of Cornwall and Prince Charles are often like “ships passing in the night”. The 74-year-old duchess and Charles, 73, have been married since 2005, but she admits that they sometimes struggle to spend quality time together because they’re both so busy with their own duties. Speaking about their routine, the duchess told British Vogue magazine: “It’s not easy sometimes, but we do always try to have a point in the day when we meet. “Sometimes it’s like ships passing in the night, but we always sit down together and have a cup of tea and discuss the day. We have a moment. “It’s lo…