Smart Homes Run Multiple Thread Meshes That Don't Talk to Each Other

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Despite industry claims that Thread and Matter unify smart home devices, a hands-on network analysis reveals that Amazon, Apple, and eero each create separate, isolated Thread meshes on the same home network. Using standard mDNS browsing tools, a developer identified three distinct Thread networks — one per ecosystem — that do not share traffic with each other. When a device on Amazon's mesh communicates with one on eero's, packets must travel through Wi-Fi via border routers, adding latency and reintroducing the single points of failure Thread was designed to eliminate. Thread 1.3 has no mechanism for cross-vendor mesh merging, a limitation acknowledged by the Connectivity Standards Alliance. The fragmentation is structural, stemming from each vendor independently provisioning Thread credentials at setup, meaning real-world 'Matter over Thread' performance depends heavily on which ecosystem's mesh the communicating devices share.

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