 Nor did she appear on "The Tonight Show with Jay Leno", a ban maintained by Leno out of respect for Carson.She also never appeared during Conan O'Brien's seven-month run.After Carson's death in 2005, Rivers told CNN that Carson never forgave her for leaving, and never spoke to her again, even after she wrote him a note following the accidental death of Carson's son Ricky in June 1991.