office. >> i remember going trick or treating in his office. >> reporter: to see dad, john jr. and eventually shis sibling would need to visit him in the office. >> it wasn't the typical let's go play catch in the yard type of father/son relationship. >> reporter: a relationship that worked until the early 1990s when donald and ivan a trey iva divorced. >> he said things that no man should ever say about his wife in private let alone in public and i think it really affected done jr. and he went through a long period of time when there was a real chasm between father and son. >> reporter: they didn't talk for a year. >> i think don jr. identified