Network traffic despite networks are disabled

Hello,

I disabled all networks, like wi-fi and bluetooth (no cellular, no ethernet). Despite that, my system does send and receive data. How is that even possible?

processes like "identityservicesd", "AMPDeviceDiscoveryAgent", "Safari Networking", "Weather Widget" or even third party tools like Adobe's are able to send minor amounts of data. regarding to apples activity monitor.

What does to disable networks even mean then? What network does it use? How can i be sure to cut off all network traffic if i want to do so?

Is it simply a localhost thing? Did anybody test that? Unfortunately I can't find any information about similar experiences

best regards

G