this post was submitted on 13 Sep 2023
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That's the part you are missing. Modern charging doesn't use standard USB power. That's the whole fast charging landscape is addressing.
Read this https://www.androidcentral.com/qualcomm-quick-charge
The power brick can supply more than 5 V over a standard USB port because it's not adhering to USB standards for supplying power. As a result, data and power are decoupled, allowing the power brick to supply more than a standard USB port over a connector and cable which are identical to USB ports and cables.