We are watching Sgt Bruce and Marie becoming attracted to each other. The opera singer, Marie is a fish out of water in the establishment trying to sing a style she does not know. I have seen all the Jeanette MacDonald and Nelson Eddy movies, and many of the movies with only one of them. Nelson Eddy said that they bickered at times on set but that they always were fond of each other. My understanding is that they had a long off and on relationship to the end of their lives that was not public. I think both are good actors and love their singing. Nelson's words are easier to understand in the songs. Their behavior in these clips and in their movies displays post code values. However even though there is no overt sex, there are clear suggestive undertones in their movies.