I'm not sure it's anything DigiKey did, as far as I know it was just a garden-variety Priority Mail shipment with delivery confirmation. It looks more like the driver simply didn't deliver and logged the notification to cover himself*, or he only rang my doorbell and didn't realize that either 'resident' could have accepted the package (my parents and I jointly own the two-family house)
---PCJ
*rampant speculation unsupported by actual knowledge/data