Sonos - Arc, Sub and 2 One Sls (pair) all on same IP?

[digit56]

Router: Askey SAX1V1K (Spectrum Cable / US)

My system sounds great; I'm not experiencing any problems. I'm just wondering why all Sonos device speakers are listed on my Network at 1 IP address? In my previous router there were 5 different devices listed, at different IP addresses. Does this matter?

1. Spectrum cable shuts off user access to most advanced feature in this Router.
2. This router does not split the network's to 2.4 and 5 in SSID view; all I see is one network
3. Router assigns all network devices automatically to network and channel
4. I see all 5 Sonos speakers listed, however "Sonos Arc" is the only item listed as connected with an IP address
5. Sonos LS, Sonos RS, Sonos Sub are all listed as "disconnected", even though they clearly have been reassigned to "Sonos Arc" IP and are connected

Can anyone explain what is happening within the Router, and if it matters that all devices live on one IP?

Thanks!