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They typically don't count traffic within their network towards the data cap (e.g. streaming Xfinity TV), so I don't think it is safe to make an assumption about the banner one way or another.

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It's delivered alongside the webpage so there's no technical way to split the data logically... Unless they're using "rough math".

Yes there is, it has to come from somewhere, and we know it's not coming from the actual site being visited...

>it has to come from somewhere

Very much doubt they count their traffic by adding up all the origin addresses contributions individually

Yeah, I doubt any of it counts at all, and honestly this is the least compelling part of this argument... It's kb vs. 100GB, hardly matters.

Nope... The packets need to be sealed back together, at that point the data is denormalized and you can't measure how much it "actually" counted.

Yes? You can see how much you added, the size before and the size after.

This is not a technical impossiblity, I'm sorry if you're invested emotionally in it being impossible.

Huh? I happen to run my own intercepting proxy which rewrites HTML pages, and if I wanted to, I could easily track exactly how many bytes came in and how many bytes went out.

What? They just have to measure bandwidth from the other side of whatever is modifying the content.

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