Well of course. The only thing the browser incognito mode guarantees is that no local data will stay around (cookies, cache, history, etc), but beyond that ther

Well of course. The only thing the browser incognito mode guarantees is that no local data will stay around (cookies, cache, history, etc), but beyond that there's nothing stopping Google or any other online service from collecting and extrapolating data, even if you are not logged in.