• Prince Harry, 36, and Meghan Markle, 39, appeared in new video clip last night 
  • The Duke and Duchess of Sussex plugged their Archewell Audio podcast in clip
  • Marked first occasion the couple have been seen since quitting The Firm 
  • Body language expert said the Duke appeared to have gained ‘US-style polish’
  • Judi James revealed: ‘Harry’s delivery has US-style energy and commitment’
  • Meanwhile added Duchess took ‘softer role’ in appearance and ‘sat demurely’