While Prince William and Duchess Catherine have been known to hug passionately at sporting events – and laugh together as they attempt archery, the sport of choice in Bhutan – the royal couple often keeps a stoic, very British decorum at most public events.
Keeping their affection to themselves is not unusual. The couple is not generally demonstrative in public, aside from a rare occasion, such as them embracing at the London Summer Olympics in 2012.
Myka Meier, a royal etiquette expert and founder and director of Beaumont Etiquette, is not surprised, telling PEOPLE, “There is no actual etiquette or royal protocol that says the couple must refrain from PDA.
“The likely reasoning is more that while traveling on a tour such as the India trip, technically the couple are working representatives of British Monarchy,” she continues.
“The couple are likely to show very little PDA, if any, to remain professional during their designated roles abroad.”
Longtime royals writer Judy Wade agrees, telling PEOPLE, “Going to somewhere like the mausoleum is very much an official, straight-laced kind of event and you wouldn’t hold hands there if they’re there on an official visit.
“But I noticed they did let their hair down at the sporty occasions on the tour, and there was a great deal of fun, and he kept putting his arms around her,” she says. “Different types of occasions call for different types of behavior.
This article originally appeared on PEOPLE.