There's an example and description at Mullvad for the two-hop connection: http://xcln5hkbriyklr6n.onion/en/help/wireguard-and-mullvad-vpn/ [Forgive the onion link, but search "wireguard-and-mullvad-vpn" for clearnet]

"Each WireGuard server is connected to all the other WireGuard servers through WireGuard tunnels."

The user gets confirmation that their target website sees the IP of the second node, but what does the ISP see? Aren't they routing to the first node (at least physically), and is it masked as the second node? Does the tunnel between nodes become redundant as the user connection tunnels through the entry node to the exit node?

Nodes/servers
Is it wrong to use "nodes" in this scenario