If the bed AC vent blowing in your face drives you crazy, there is a somewhat easy fix (as long as you are willing and able to cut a 4" hole in the back of your cubby. I did this same fix on my 2019 400 and just finished it on the 2022 400. I installed a splitter behind the drawer under the fridge and put a new outlet/vent hole inside the bottom cubby. This works extremely well. It reduces the bed vent enough to be tolerable and also gives you additional air flow near the floor at the back of the T@b. (unless you stuff that cubby full of stuff which I don't)
Here is the link to the thread where I did it on the 2019.
https://tab-rv.vanillacommunity.com/discussion/9008/t-b-400-2019-rear-a-c-vent-blowing-directly-in-my-face-solved#latest
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Oneonta, NY
2018 Nissan Titan Pro 4X "Big Bird"
Leadville Colorado