Is there any documentation for nRF52 device integration to Google home or Alexa via Thread/Matter?

I'm seeking an nRF52, preferably the nRF52840, code example to integrating Google Home or Alexa via Thread/Matter (low power, low data rate application such as light bulb). While I’ve come across some fragmented examples and code snippets, I’m looking for comprehensive, end-to-end documentation to guide a project from start to successfully connecting with a mobile app. Any recommendations?

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