Chrome itself doesn’t track anything. Google websites don’t know whether they’re being visited from an incognito tab or not, and Chromium works hard to ensure

Chrome itself doesn’t track anything. Google websites don’t know whether they’re being visited from an incognito tab or not, and Chromium works hard to ensure they can’t know (because knowing a user is in incognito mode is itself a privacy leak), so they track anything they could otherwise track without the logins and cookies which are excluded from the incognito sandbox.