Thinking about it, I have felt that it sometimes is a bit cooler near an exit. I wouldn't say that it's chilly, but sometimes slightly cooler. Easily solved by the blanket.

But why? It can't be incoming air leaking through the door. It must be the door itself or maybe the small gap that has less insulation. Kind of radiation coldness.

Despite that, I wouldn't trade 28H/J for anything less than CW/F, not even for most seats in WT+.

Edit:

And Jamesie_version1 already answered my question before I hit the post button, thanks