they weren't pleasant:

https://i.postimg.cc/rstBqxQp/burton.jpg

more here

https://tinyurl.com/2r52c3yc

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In 1970, movie stars Richard Burton and Elizabeth Taylor were America's IT couple. So when they agreed to do an episode of "Here's Lucy" it was a big event. Years later in his book, The Richard Burton Diaries" his writings revealed his real feelings on Lucille Ball and the episode Liz and he did.

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Unfortunately, Burton's comments are on target. Here's Lucy (68-74) seems like something from the late 50's or early 60's, the show is hopelessly dated. Jack Benny once said to a crew member during a break when she was yelling and screaming about something happening on the set, can somebody tell her "she already has the job".