If you truly detox from caffeine even extremely small amounts will be noticeable. I knew a woman who couldn't eat chocolate because she found the amount of caffeine to be too high. I didn't even know there was caffeine in chocolate.
I think the causality went the other way in that case. I've been roughly caffeine free at certain intervals. Never felt anything from chocolate.
I say "almost" caffeine free because I still regularly ate chocolate. So I still had a little tolerance. Yet the difference between 50g of milk chocolate and 300g of 90% was very noticeable.
I find it hard to believe that some folks would feel the caffeine in chocolate unless they ate an entire dark chocolate bar in one sitting, but I suppose it's possible.
For that matter 24oz is rather a lot of coffee to drink at once. I brew my daily coffee with 200g of water, or only about 7 floz.
So; with that said, while I believe that eating 28oz of chocolate is a lot, I guess it could happen :-)
But anyway, I've been to a coffee shop or two, and I've never seen a "standard cup" as anything other than 12 ounces.
That's not just an outlier, that's absurd. At 100mg caffeine per 8oz of coffee, that's over 6 grams of coffee per day, or more than 15 times the amount generally considered safe.
(3 pots of coffee) is about (180 oz).
I’m never making that mistake again and I’m making up for lost time.
Ghiradelli claims their dark chocolate has 20mg per oz and their milk chocolate has 6 mg per ounce. [1]
That would mean eating a standard 3.5oz/100g chocolate bar would have 70mg of caffeine for dark, or 21mg for milk.
While 3.5oz is a lot in a sitting, 70mg is equivalent to a smallish cup of coffee.
[1] https://www.ghirardelli.com/product-faqs#:~:text=Dark%20choc...
Maybe for a subset of people. Otherwise kids will be getting crazy jitters the first time they eat chocolate (presumably before they ever drank coffee/tea), which obviously doesn't happen.