Often, new users, The difference between Submitting Feed and Submitting Batch are as follows:
A: Submitting Feed
The Feed is submitted once you've completed creating a list of products that you'd like to ship, and then try to view the available Shipment plan for it:
B: Submitting Batch
When you've selected a Shipment plan for the products and then chose to submit the batch so that you can proceed to Box Content and then complete the Shipment process, that is called submitting a batch.