There are way too many people touching any product you ship in the Supply Chain today - a lot could go wrong, especially LTLs.
LTLs - work on a hub & spoke model.
So you need to make sure you have proof to show that you did your job right , just in case something goes wrong.
For example nowadays When Amazon makes a delivery at your house, there is a picture of the product they left at your doorstep - to show that they did their job right & anything that happens after that - it is not their fault.
So you need to make sure you have proof to show that you did your job right , just in case something goes wrong.