This television episode refers to:
August 6, 1964
While Christine is eating at the restaurant, alone, her phone rings. She answers it, thinking it is Burton calling. After embarrassing herself, going on and on about how much she misses him, she discovers that it is actually Richard calling. She tries to cover her mistake by saying the reason she called Richard 'Burton', is because she was thinking of 'Richard Burton' in the film with Elizabeth Taylor, 'The Night of the Iguana'.