That phallic thing is called the ZBT-2 
Sorry, a zigbee mesh doesn’t work like that. Plugging in another coordinator like the Hubitat will create a separate mesh, assuming you can actually get it integrated in the first place.
What you need are more router devices spaced evenly between your phallic ZBT-2 and the motion sensor, which is an end device.
Have a read through the first couple of threads in this section. Once you’re done and have a basic understanding of zigbee, then read this.