Please feel free to combine these orders - especially if it saves us both on shipping. =D
It looks like the warehouse had already processed order 3279869 before you posted this. Once you get the shipping notification email, it is generally too late to make changes to an order. Sorry the timing didn't work out this time!
For future reference, when going through the checkout process, you should have an option to combine items with a currently pending order (if it has not yet started going through the shipping process. To do this, you should take the following steps:
From the shopping cart, hit the "Proceed to Checkout" button
This should bring you to a section with different numbered buttons that you can click on.
Click on "Step 2 - Shipping"
Click the button that says "Change Shipping Details"
This should should bring you to a page the will display all available shipping options and methods for the order at the time is it being placed.
I hope that help! If you have any further questions or concerns, please let us know. Thanks!