The Sonos Amp, Connect:Amp, and ZonePlayer 80 can all work together if you are using the Sonos S1 app.

Not sure what “flows” means.

Read more about S1 and S2 compatibility here:

https://support.sonos.com/en-us/article/sonos-s2-compatibility

Thanks for your quick reply

By flows I meant issues. 

So both sonos would work together. 

Also, do you know if one of the internet connection can work as a switch for internet?

Thanks

You can connect a second device to the second Ethernet port on a Sonos device that has one, it will share the 100 Mbps connection. There is a limit to the cascade depth that I don’t recall.

I spend the extra $20 and get a small switch, 5 to 8 ports, so each Sonos is fed the full Ethernet bandwidth.

Amazing! Thanks a lot. I also thought of buying a switch, so it confirms my first idea. 

Thanks