@joefromchicago,
Agreed!
I thought about my comment afterwards. I didn't mean to indicate they didn't have good relationship or that was nasty or vice versa. She has never said in any interview I've ever heard that they had a falling out either. I don't think it was in her nature to downgrade anyone, much less do it to Fred A. He sure as hell praised her to the high heavens, too.
However, he was a famous/infamous perfectionist and that must have made for extra long hard rehearsals. Considering what and how the end-product turned out, it was well worth it. Some of the best dance scenes in cimena were created by these two (plus Hermes Pan the choreographer).
I just looked at a Youtube clip of some of their famous routines and I barely saw them ever looking down. They actually looked they enjoyed it and each other. She made it look seamless as though she weren't acting, too, though he wasn't that natural an actor.
Also her scheduled work day with filming at other locations and other movie sites must have made her worn to a frazzle. I'm sure no modern day actor/performer could handle what these consummate pros did.