Question about caching

Hello,

I have some simple questions regarding caching and R2.

I have a bunch of static assets for my site (that doesnt really change over time).

I use an R2 bucket to store them. I'm also using the cloudflare CDN for caching and I've set the rule as shown in the image.

My question is : why when i hit the cloudflare cache, i see the max-age as 14400 (4hour). Is it showing the browser ttl and not edge ttl ? Also how i can be sure that the edge ttl is like 1year (or close too) ,
image.png
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