Complex sentence: In the 1952 version, their roles were theoretically taken by Marge Champion and Gower Champion; however the plot and characters of the 1952 film bore no resemblance at all to those in the original show or the 1935 movie.
Split into simpler sentences: In the 1952 version, their roles were theoretically taken by Marge Champion and Gower Champion. However, the plot and characters of the 1952 film bore no resemblance at all to those in the original show or the 1935 movie.