Conversation so far:
What did Bradbury do in Hollywood?
Ray Bradbury lived about four blocks from the Fox Uptown Theatre on Western Avenue in Los Angeles, the flagship theater for MGM and Fox.
Where did Bradbury sneak in Hollywood?
Ray Bradbury learned how to sneak in and watched previews almost every week four blocks from the Fox Uptown Theatre on Western Avenue in Los Angeles.
What else did Bradbury do in Hollywood besides sneak in the Fox Uptown Theatre?
Sometimes, Ray Bradbury spent all day in front of Paramount Pictures or Columbia Pictures and then skated to the Brown Derby to watch the stars who came and went for meals.
Did Ray Bradbury meet any stars in particular?
Ray Bradbury recounted seeing Cary Grant, and Marlene Dietrich.
Were there any other stars that Ray Bradbury encountered besides Cary Grant, and Marlene Dietrich?
Ray Bradbury recounted seeing Mae West, whom he learned made a regular appearance every Friday night, bodyguard in tow.
What happened when Ray Bradbury met Sergei Bondarchuk?
Bradbury met Bondarchuk and brought him in from a very long line of famous Hollywood directors. They stared and asked each other Who is this Bradbury?“
Where did Bradbury drag him inside?
Sergei Bondarchuk brought Bradbury in to a Hollywood award ceremony in Bondarchuk's honor.

Question: What else happened when they met?
Self-contained rewrite: What else happened when Bradbury met Bondarchuk?