I believe those sections appeared in one of the numerous Python specials, Python Night or perhaps Almost the Truth. I don't recall them ever being in the film itself.
When I was a kid I rented the movie every week for months, when it was on VHS (and the Jesus Christs were edited out). Then I had the first DVD which was AWFUL (seriously, the colour was so bad I had no idea the green night was actually green) and saved up all my pennies to buy the special edition the DAY it came out.
I remember the discussion of Graham looking off screen for his lines, but I don't recall them ever being in any version of the film proper that I watched.