Assuming that's the one, it has given me many wrong answers lately and a sarcastic response calling it out makes it spit out a correct answer.

Pushing it for an explanation on every instance, it says that it ends up not relying on the query of the user to generate the answer. (?)

I've noticed that adding the line "check your answer before answering" gets it to replace English words got Chinese characters..

Funky stuff these flagship products.

AI Overviews are not accounted for in that number.