"It may be doubted whether so small a number of men ever employed so short a space of time with greater or more lasting effects upon the history of the world.” — Sir George Otto Trevelyan on the Battles of Trenton and Princeton
Hence the Bavarians and Imperial forces tend to operate a little at arm's length.
As I stated in the aforementioned thread, I think this is a terrible rule, but each to their own.
Design for effect. And a far less severe one than a Corps passing through the rear of a Front and putting 5 Armies OOS, as in Paths of Glory.