Yes, his wife later released a recorded version of the different material he cut after 9/11.
IIRC, the main thing he cut from when I saw him live was a closing routine about a power outage on a hot day causing a spiraling series of catastrophes that ultimately results in the end of all life on Earth. I think he wound up using it in the special after that one.
Yes. I this the “My uncle Dave, your Uncle Dave, everyone’s uncle Dave!” bit?
Didn’t he repeat the same intro on both?