Thought people here might be interested in the findings of an infosec consultant related to Windows 10 and Telemetry/Privacy. It may also relate to Win 7/8/8.1 since MS backported some the telemetry stuff to these versions...
https://winaero.com/blog/regardless-privacy-settings-windows-10-creators-update-phones-home/
https://winaero.com/blog/regardless-privacy-settings-windows-10-creators-update-phones-home/