I'm newbie and learning to setup Routes & Rule on Inventory Module.

Over following tutorial, explanation on pre-configured 3 steps using all "Pull Form" action and 1st the demand created over Customer location will pull the product from Output hence create demand on Output, Packing Zone and lastly create demand on PIck task from Stock. All the 3 actions are linked and logical to understand.

How ever during the hand-on with Test Data

The 3 step delivery pre-configured with following setup.

Understand that we could either use push or pull the product to achieve the desired activity, however the 1st action Pull from, will create pick from Stock to Customer, see that no linkage with the location Packing Zone over the 2nd Action to Push the product to customer at all. Need some explanation pls.