Main house network router(192.168.1.x) is connected to the internet and has multiple devices on its LAN ports. A separate network router (192.168.3.x) supports multiple wifi cameras and NVR. Would like to connect the 2 networks together so all the users on the main network can access the cameras on the other network. Can we direct connect the 2 routers or do we have to have another interim router to connect the 2? Other ideas?