What are the disadvantages of a two piece propeller shaft?

A two-piece propeller shaft can introduce several disadvantages, including increased complexity in installation and maintenance due to the need for a center support bearing, which can be a potential point of failure. Additionally, the two-piece design can lead to increased vibration and noise if not properly aligned, potentially impacting performance and comfort. Moreover, the added weight and cost associated with the additional components may be less favorable compared to a single-piece shaft.