why does apple care plus start before you have the product
I find it odd that when you buy a product like the iPhone 10 Max or iWatch 4 online it asks you if you would like to opt in and purchase Apple Care +. (which I do) yet the coverage starts even before Apple ships the product. So that means the expiration is less than 2 years from when they even ship it.
When I call the explanation seems to be it was on the same order and started when you ordered. While I understand the words its rather odd that they ask you opt in and do not tell you, you are better off waiting.