When we prepare your orders for shipment, we'll try to combine multiple orders into the same shipment when possible. We're usually able to do this if your items are shipping from the same Amazon fulfillment center around the same time to the same address. You don't need to do anything for this to happen.
There are times when we won't be able to combine shipments. These types of orders won't be combined with other orders when shipped:
* Orders that can't be shipped from the same fulfillment center to meet your promised delivery date.
* Orders shipping from different fulfillment centers.