Incognito hides a trail on your device—not on the network
A private-browsing window mainly changes what your browser saves after a session. When you close it, the browser generally clears that session’s history, cookies, and site data from the device. It does not make the connection itself invisible.
To load a webpage, your device still sends traffic through the network it is using. The network operator—such as an internet provider, employer, or school—may be able to identify the websites being contacted. The websites themselves can also recognize activity through information such as your sign-in or, in some cases, your device’s network address.
What observers can—and can’t—learn
Most websites use HTTPS, which encrypts the contents of the connection. That usually prevents a network observer from reading the pages you view, messages you send, or passwords you enter. But the site’s domain may still be visible through connection or name-lookup information, depending on the browser, network, and privacy protections in use.
So “can see the websites” does not necessarily mean “can read everything you do on them.” A network operator may be able to tell that your device contacted a particular service without seeing the specific article, video, or account page you opened.
A VPN changes which network operator is in the middle: your internet provider generally sees a connection to the VPN, while the VPN provider may be able to observe more about where your traffic goes. Incognito controls the browser’s local record; it is not a cloak for the path your traffic takes.
