The answer is ‘Yes’… but note the Amp (ceiling) speakers are set as the two rear HT channels.
The Arc sound-bar is set below and connected to the TV HDMI-ARC/eARC or optical port and ‘mainly‘ it will handle the front channels (left/right/center) and the two upward firing channels for Atmos audio, if the connected TV supports that.
The Arc will connect to your router either over the 2.4ghz WiFi signal or (if you prefer an ethernet connection) and also can be ‘bonded’ to the Sonos Sub and the Amp/Speakers over 5ghz WiFi Band (or ethernet) when playing TV Dolby surround sound.
The Amp will handle the two rear HT channels (rear left, rear right) and obviously the sub will handle the bass frequencies. Note: the ports on the Sonos Amp are disabled when it is being used as HT rear surrounds.
When playing music the devices will use a 2.4ghz wireless signal (or ethernet) for communication.
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BIG THANKS