In the course of meetings with the writers’ guild over what the hosts would be permitted to do and telephone discussions between the shows about mutual interests, Mr. Leno and Mr. Kimmel established a relationship, the late-night representatives said. Mr. Kimmel even offered some words of support for Mr. Leno on Wednesday during his first show back.
Mr. Leno, who has been the leading star in late-night television for well over a decade, extended an invitation to Mr. Kimmel, who then reciprocated, the representatives said.
