Amazon orders can have multiple bundles; they are really driven by a) who is fulfilling the order and b) availability to ship at the desired speed.
Single line, single bundle order confirmation (online; also get email):
From there, changes can be made to shipping address, payment method, gift card, shipping speed; or you can cancel the order:
These order details live under "Your orders" - analogous to our "Order History" - it's a reverse chronological list of all your orders.
Here's an order with two bundles (two different fulfillers)
This is your online confirmation:
If you click the "review or edit recent orders" link you're brought to order history (not directly to the order details), where the order above is now clearly two separate orders not linked in any way; clicking the "view order details" and "view or edit order" bring you to the same order details page for each, where you can change the same things as with the single line order above.
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