Reports of a rift between the Cambridges and Sussexes began circulating at the end of 2018.
The couples had been only been seen in public all together a handful of times.
While they’ve attended annual official events such as Trooping the Colour and the Remembrance Day and Commonwealth Day services, the foursome have only had one charity engagement together - The Royal Foundation Forum in February 2018.
One PR expert thinks a joint engagement, soon after the reports of a feud began to emerge, could have quickly helped to dispel the stories.
“They could have killed these stories pretty quickly and they could have made it much, much sharper, even just getting them all out together on some kind of event and having them all out together laughing and smiling,” Nick Ede tells Yahoo UK’s ‘The Royal Box.’
But royal editor Robert Jobson believes William, Kate, Meghan and Harry probably won’t have gone along with that idea, if suggested to them, “because there was something to the story.”
He adds it can be “very hard for PR professionals,” because “you’ve got people behaving in a certain way to make it look like they’re not.”
Ede says: “It can look really contrived and then you get the body language experts who see right through it.”