http://o54hon2e2vj6c7m3aqqu6uyece65by3vgoxxhlqlsvkmacw6a7m7kiad.onion/en/blog/2022/3/10/wireguard-multihop-now-easy-available-app
Anything observing the traffic leaving your device will only see regular WireGuard traffic destined to the entry server. They will not be able to know that the traffic will be forwarded to another server, nor which one. The entry WireGuard server will be able to see your source IP and which exit server the traffic is headed for, but it can’t see any of the traffic.