It says "Cronkite revealed in his memoir, "A Reporter's Life," that Rather threatened to leave CBS unless Cronkite gave up his anchor chair several months before his 65th birthday. "And once Rather had the job, he never let Cronkite on the air again," said one media insider. "Walter has never forgiven Rather for his brutal tactics.""
So, given their history, WHY would Rather be invited to participate?? Hello??
If you think about it, it would be Cronkite that would be the likely one to carry the grudge, not Rather since Rather was the perp and Cronkite was the victim, so his snub of this show is a further kick in the Cronkite pants.
Hypocrisy is the compliment vice pays to virtue. Most people can put aside differences, personal disappointments and jealousies to find a kind word to say about an elderly colleague who once may have been a rival. But not Gunga Dan, a petty, vicious little man, the very model of a limousine liberal.