Losing control of audio device

Roon Core Machine

Apple iMac Late 2014 OS11.7.8

Networking Gear & Setup Details

BT Business Hub 2

Connected Audio Devices

Sonos S1 and S2 speakers / amps

Number of Tracks in Library

55,000

Description of Issue

Can anyone tell me how I can tell whether my Sonos amp is using wifi or ethernet to connect with Roon? I have a jumble of very old Ethernet wires throughout the house and am not sure if I have connected correctly from the router to the amp?
Thanks