Comment by AdamH12113

The Onion did a series of transcripts of "unused audio commentary" for the Lord of the Rings DVDs narrated by Howard Zinn and Noam Chomsky. They sounds similar to what you describe, and are a great parody of both the story and the narrators:

https://www.mcsweeneys.net/articles/unused-audio-commentary-...

https://www.mcsweeneys.net/articles/unused-audio-commentary-...

https://www.mcsweeneys.net/articles/part-one

https://www.mcsweeneys.net/articles/part-two

https://www.mcsweeneys.net/articles/part-three

https://www.mcsweeneys.net/articles/part-four