When 'Bundles' are sold I appreciate the explosion of BOM at the time of order confirmation, as well as the top item is in the 'Order confirmation' and the 'Invoice'.
At the "delivery note" I appreciate the explosion, but I suggest that the top-level-item/Bundle item should still be visible at the delivery note.
Imagine how the warehouse worker at the customer site should be able to approve their inbound shipment, against their sales order. Only if our warehouse worker is physically packing the kit and marking the kit it will be possible to recognize the bundle for the receiver at customer site.