Wireguard / mDNS and .local addresses

So when I wireguard into my home network everything works great including local discover with ipv4 addresses, however the .local addesses I've setup through mdns aren't resolving.

My setup is with Opnsense and I've been going down rabbit holes with chatbots the last few days (opening up ports, etc.), and nothing seems to get this working.

The mdns service is broadcasting to every subnet. Is this just not workable or am I missing an easy fix in all this?