Nope, but that was the example I had in mind when I chose my phrasing :)

I think I can describe the principles at work with DNS, but not all of how IP packets are actually routed; the physics of beamforming and QAM, but none of the protocol of WiFi; the basics of error correction codes, but only the basics and they're probably out of date; the basic ideas used in private key crypto but not all of HTTPS; I'd have to look up the OSI 7-layer model to remember all the layers; I understand older UI systems (I've even written some from scratch), but I'm unsure how much of current web browsers are using system widgets vs. it all being styled HTML; interrupts as they used to be, but not necessarily as they still are; my knowledge of JavaScript is basic; and my total knowledge of how certificate signing works is the conceptual level of it being an application of public-private key cryptography.

I have e.g. absolutely no idea why Chrome is famously a memory hog, and I've never learned how anything is scheduled between cores at the OS level.