Batman-adv - normal data & mesh on same link

I've got wired ethernet through parts of my house, but no VLAN capable switches (and some powerline connections, etc).

Is it possible for my main router (and maybe others with bridge loop avoidance) to add the batX device to br-lan, and also add br-lan as an interface for BATMAN mesh traffic? Will the batX device drop the BATMAN traffic it sees, or will it forward it over the mesh?