Oprah contacted the Sussexes via text prior to the interview, but had no idea Meghan would go "all the way there" with certain revelations.
Julia's remarks mocking the Duchess of Sussex have led to more than 200 complaints.
"Meghan is really wonderful and so kind – just as kind as everyone says she is.”
The Duchess of Sussex was unable to attend the ceremony, as she is pregnant and was advised not to travel.
The former ITV breakfast presenter suggested starting a new show called Morgy And Fergie In The Morning together.
The Duke of Sussex will reportedly return to the UK for his grandfather's funeral.
Docuseries Heart Of Invictus will follow a group of athletes as they prepare for the 2022 Invictus Games.
The former Good Morning Britain host has given his first TV interview since his exit from the ITV show last month.
The Judas And The Black Messiah actor ended the routine with a special message for cast member Kenan Thompson.
Exclusive: Survey follows media fall-out from Harry and Meghan's claims of bigotry and controversial race review.