Vine said: “There have been a lot of signs about their unhappiness I suppose, even when they were engaged.”
Showing the footage, the chat show host explained: “People were saying, ‘Why is there a pond between them and the media?’
“Maybe it was a symbolic pond,” he commented, before giving the floor to Campbell, who said: “Harry is born into the Royal family and Meghan married into the family and she knew what she was doing.
“They don’t exist without public support.”
Jeremy Vine airs weekdays at 9.15am on Channel 5.