Fair. I think it’s important from an “Is this True AGI?” sense to distinguish these, but yes, in the colloquial sense I guess the system could be said to understand, even if it’s not strictly the actual LLM part that does it.

No, they really don’t. They answer you with words that are commonly found in conjunction with calendars. There is code in Siri that understands calendars, but the LLM part ain’t it. I have, ahem, firsthand knowledge of how Siri does this.

What LLMs do has nothing to do with understanding. There’s no there there.