What part installs above replacement part W11755719?

Refrigerator & Freezer Repair
1

Brand: Maytag
Model Number: MSS25N4MKZ04
Main Symptom: Missing part

I had some family over, and the freezer got crowded and frosted up. That made me realize that part 5 in this diagram is not present in my freezer:

part number: 2203594
name: Duct, Freezer Air
This is page 14 of this…
Full Parts List: https://s3.amazonaws.com/sm-backend-production-attachments/repair-parts-list-w11557684-revf.pdf

This page shows that part number 2203594 has been replaced by this part, which I have ordered: Whirlpool W11755719 Refrigerator Air Duct (Exhaust Duct) | Genuine OEM Part

However, there is a 2 inch gap between the top of part W11755719 and the port between the freezer and refridgerator. What part do I order to install above part W11755719 to cover this 2" gap?

Photos / video link: https://drive.google.com/file/d/1lPLnYa7u3Pf7JcPWNOahfpa4E8COaNVX/view?usp=sharing

This is the best photo I have for before the part was ordered, to the right of the ice maker you can see the clip that should be holding part 5 in the diagram , #2203594: https://drive.google.com/file/d/1to7ZDLf81szZOpVnK2PChWiDBoJSjr9u/view?usp=sharing

2

Can you please send me pictures of before and after of the part you ordered. It’s kind of amazing that if that part was missing it took you this long to start having problems

3

This is the best photo I have for before the part was ordered, to the right of the ice maker you can see the clip that should be holding part 5 in the diagram , #2203594: https://drive.google.com/file/d/1to7ZDLf81szZOpVnK2PChWiDBoJSjr9u/view?usp=sharing

I think the overcrowding blocked whatever passive air flow that had the unit working well enough for us not to notice. Also, some ice fell down the duct this time and blocked the coils