Stock Pixel 8 (Default Settings)-> 348.4 req/hr

of which: Nearby Wi-Fi Routers (Location Triangulation) is 84.2 pings/hr

So a stock (idle!) pixel 8 is checking where you are more than once per second (without maps running, without asking for directions) and asking what you're doing almost five times a second.

Is there any slope at all? Like, does it ask more frequently in the beginning and less after an hour+ of idle, or is it fairly static?

Would be very curious to see what adding social media and voice assistants does to this, especially with a controls against a silent room and a room with a radio/movies/TV/pure music playing.

Does the voice assistant send more data in the conversational context? How much more? If it is indeed more, how much voice is theoretically being transmitted given the average words per bitrate?

It could also be interesting to see if the stock device transmits more in a conversational environment. Like, if the device is idle, why would it be transmitting more while sitting in an office instead of a quiet lab?

Your maths is wrong...