Typically the simplest explanation is reality, my guess from shipping thousands of products from Asia to the USA,
A large shipment via air left the finishing point for delivery on the 29th or 30th figuring a 14 hr flight they anticipated the order to be filled and began to prepare lables, however to do this they had to manipulate the software for the batch that printed them. Figuring that they would arrive within the next 24 hr's it would not matter if they did not get enter them as scanned.
Then I assume that the order was split some how in the freight shipment, and possibly customs did not process them or receive them Friday in time to release them, this caused them to sit in what is referred as customs lock up until the entire order is complete. This held them over the weekend and maybe they even decided to hold the shipment to understand why the cartons for the order were split.
This is where it becomes to hard to anticipate what else has happened. However if thinking that the simplest explanation is the answer, they decided after the first shipment was delayed they would not anticipate orders until the product arrived and the reason for the next group is getting better tracking info.
By the time the 1st shipment from asia was released the second order arrived without issue, and the 2-3 weekers got there orders released. Now the verification of the 1-2 weekers has to happen the software needed to be fixed to cover the terms of the ups 3pl contract and just caused further delays.
My order was completed @ 1:56 pm PST, I was charged in full in the early am hours of Nov 30th which was probably a function of the label print late in the pm on the 29th, banks push to the next day for charges after 5pm est
if anyone has received their N4 on the package lable will be some information that would allow for the location and distribution of all associated deliveries, if they want to post the info I would be happy to return what I find from my logistics and frieght forwarding agent.
Hopeful I will get my N4 some day.. Just nothing yet, yellow box since the 29th, estimated delivery on 12/3 and received nothing, and from what I read I confirmed the order earlier than most...
We will see...