In the summer of 1968, William F Buckley and Gore Vidal met four times at the GOP convention in Miami, and then four more times at the Democratic show in Chicago. These encounters lasted between eight and 22 minutes, and most of these are available on youtube (as of May 11, 2020):
Here is a full 22-minute audio clip of their debate of
Aug. 27,
1968, between Vidal and Buckley at the Democratic convention in Chicago.
In 2015, a movie was made of
this
exchange and the context surrounding it called
"Best of Enemies".