With David Letterman's retirement, what title did Conan O'Brien hold in the late-night talk show world?
Youngest Host
Most Guests
Longest-working Active Host
Most Episodes
Answer
With David Letterman's retirement in 2015, Conan O'Brien became the longest-working active late-night talk show host in the United States. This streak ended with his retirement from late-night television in June 2021, after almost 28 years in the industry.
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