How many movies have Chris Columbus and Wally Ross collaborated on?

They have worked on 1 movie together! Their first movie together was Home Alone 2: Lost in New York (1992) and was their highest rated movie together. They have not worked together since Home Alone 2: Lost in New York (1992).

Home Alone 2: Lost in New York (1992)

Role
Man in Toy Store (uncredited)
Crew
Animal Wrangler
Crew
Director