Authors:

The way television works is that directors come in and out, and they're not there all the time, following every character through every scene. They're vagabonds who go from one show to another.

"Creator/Showrunner Amy Sherman-Palladino Talks BUNHEADS, Casting the Highly Specific Characters, Knowing Her Endgame, Writing Movies and More". Interview with Christina Radish, collider.com. February 4, 2013.
The way television works is that directors come in and out, and they're not there all the time, following every character through every scene. They're vagabonds who go from one show to another.