1. This is the last tracking for parcel LT416120262CN:
2016-11-17 00: 00: 00.0 10:37:00 Guangzhou leaves the processing center and sends it to USORDF

2. Your parcel is going to USA Chicago. Parcel to USA can take between 15 to 35 days to be deliver and sometime more. This is the Holiday Season and every Post Office in the World are very busy and mail is very slow. I suspect Chicago and JFK are 2 places that there is a backlog for incoming Inbound parcel from overseas.

3. For parcel EA260459514CN, this is the full tracking:
Number: EA260459514CN
Package Status: In Transit

Destination Country: United States
2016-12-13 18:46 Origin Post is Preparing Shipment, We have received notice that the originating post is preparing to dispatch this mail piece.
2016-12-13 18:46 CHINA, BEIJING EMS, Processed Through Facility
2016-12-13 01:56 CHINA, BEIJING EMS, Processed Through Facility
2016-12-13 01:55 CHINA, Processed Through Facility
2016-12-13 01:20 Origin Post is Preparing Shipment
2016-12-13 01:20 CHINA, Processed Through Facility
2016-12-12 18:05 CHINA, Acceptance

Origin Country: China
2016-12-13 18:46 Beijing, from Beijing to Chicago
2016-12-13 01:57 Beijing, from Beijing to Chicago
2016-12-12 18:05 Beijing, Beijing Cosco building, Courierpost fuchengmen Branch Office has been received (the embrace cast member name: Li, Tel:)
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4. This parcel should deliver faster then the LT parcel. Now it's up to USPS in Chicago to scan the parcel on arrival or when they have time to do it.

5. In normal condition parcel with China Post Express Post Service (EMS). Normally it is much faster than airmail and might take one to four weeks to arrive. The price is also much higher than airmail.

Hope this help.