Ring Doorbell Disabled for Amazon Specific Deliveries

My Ring doorbell captures any and all motion EXCEPT when an Amazon delivery vehicle is nearby. • Deliveries from all other carriers clearly show the delivery taking place, often with the delivery person captured while they are still entering the video frame, regardless of whether or not they press the button to cause a doorbell ring • My family and neighbors are always captured upon entering field of view of the camera, initiating A/V recording of their entire presence within the field of view of the doorbell • Deliveries made by Amazon (blue Prime van) NEVER appear, and I mean NEVER. My home office has view of the street, and when I see the van pull up out front I attempt a "live view," the app displays a spinning progress indicator for a minute or so before informing me I can't go live right now. Functionality resumes as soon as the van pulls away. • This has been replicated with such reliability and consistency that the root cause being related to network or hardware deficiencies is statistically improbable Is Amazon disabling A/V recording of their own deliveries? If so, what is the mechanism here and why was I not informed when I purchased my Ring doorbell?