Loking at the tunnel in NRo going to commonlands, there are several breaks in the mesh, first at the mouth of the tunnel, another near the CL zoneline. Both of them have 2way links to bridge them. The CL end is weird, because from the NRo side, it is just a break, coming from CL there is a wall there blocking the tunnel. The link goes through it, but maybe that wall is causing the problem.