No, you only expect it to send the URL when you hit "enter". For instant results, however, it must send each character typed to Google. Also, when I type a non-google URL into my address bar, I don't expect Google to be notified. As it is, they can track all your internet travels from Chrome, and I don't like it. Hence why I use Firefox and Duck Duck Go.
You're absolutely right, that's why I wrote "somewhat less".
It's happened to me more than once that I accidentally pasted a password into the Chrome bar so that I had to go and change it, and so like you, I much prefer having an address bar without function creep. All I meant is that the potential for much worse privacy leaks is much much greater with the Unity bar than with the Chrome bar.
