Hello @plzdontcry
You can't connect all of the access points to the same outer network through a switch. But, you also don't have to connect them in a chain. One of the units (primary) is set up differently from the others in order to act as a firewall and router that creates a new "inner" network. That is the only one that should be connected directly to your internet service. The rest of the units (secondaries) normally connect to this inner network through an 802.11s wireless mesh. But, you can also connect those secondaries back to the primary via a switched Ethernet network. The key is to have your Ethernet switch connected to the LAN Ethernet port on the primary, so the switch is part of the "inner" network. Then, the secondaries can be connected to that switch (or other switches that are downstream from it). Things to watch out for are smart/managed switches that include "loop detection" or "Spanning Tree Protocol" (STP). Those will interfere with wiring secondaries, so either don't use those switches, or consult the switch manual(s) to disable those features first. Here's a support page with more details: https://support.google.com/googlenest/answer/7215624?hl=en
