Google Nest Wifi vs. Google Wifi (with TMo Gateway)

Just wanted to add, after further testing, that my conjecture about a cap on network speed using the Google Wifi system in conjunction with the TMo Gateway was mistaken.   es slower than the TMo router, but it isn't limited to below-200 Mbps speeds. What I'm seeing is that the download speed on Google Wifi is consistently about 100 Mbps below the TMo gateway speed, but if the latter is above 300 Mbps (at my location it's often somewhere between 300 and 400 Mbps), then the Google speed will rise above 200 Mbps. (There doesn't seem to be the same tariff on upload speeds; it's usually about the same.) I didn't want anyone to be misled by my earlier conjecture so I'm posting this correction.