This sounds like the ZigBee device will enable a cascaded network topology. Similar to that in Classic Bluetooth where we can have two different piconets and one device being part of both piconets. The videos at the Ember website are worth looking. They are fun and insightful.
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.