Dr Goodall discussed the royals in an interview (Image: FilmMagic)
The couple officially gave up their HRH titles at the end of March.
They have now set up base in California where they are in lockdown with Archie.
Last week it was revealed the couple are set to launch a well-being empire called Archwell.
The name is derived from the Greek word for “source of action” and the inspiration behind their son’s name, Archie.
The Duke and Duchess of Sussex are understood to be working on plans to run emotional support groups and even a multi-media educational empire.
The Sussexes were forced to abandon their ambitious plans to launch a foundation under the name ‘Sussex Royal’ after the Queen banned them from using the term royal after they quit royal life.