Multiple devices/structures on single account -> no response in second home

[pholleran]

TL;DR

I have two Nest thermostats running in one Nest (non-Google) account, one for each of two different homes. To try and separate them completely I'm running two installations of Homebridge on a single Raspberry Pi 3. One installation is for my primary home and a second is for a different home. I'm applying the structureId filter on each installation to return only the correct device.

My second installation of Homebridge successfully adds the thermostat to my home, but the Home app shows "no response." The Nest App shows proper data.

Is there anything unique about using a single Nest account across multiple homes I should know?

Details

Nest

• single Nest account
• two different thermostats in two separate homes

Homebridge

• multiple versions of homebridge configured following this guide
• running homebridge-nest@4.6.9

Homebridge@1

config.json

{
    "name": "Nest",
    "access_token": "TOKEN",
    "structureId": "STRUCTURE_1_ID",
    "platform": "Nest",
    "_bridge": {
        "username": "0E:40:5A:85:BE:E8",
        "port": 47010
    }
}

Homebridge@2

config.json

{
    "name": "Nest",
    "access_token": "TOKEN",
    "structureId": "STRUCTURE_2_ID",
    "platform": "Nest",
    "_bridge": {
        "username": "0E:37:D8:82:37:BC",
        "port": 31015
    }
}

Behaviors noted

• Homebridge@1 added to Home_1 in iOS Home app successfully

• data reported in Home app successfully

• Homebridge@2 added to Home_2 in iOS Home app successfully

• No response reported in Home app

Tested so far:

• checked logs - all looks good. Identical across both homebridge installations, sans strucutreIDs
• removed structureID from Homebridge@2 configuration, re-added to Home_2
  • added both thermostats
  • No response noted for both in Home_2
  • Homebridge@1 still reports correctly
• tried running as both a child bridge and not - same result.

I'm struggling to figure out what is happening and would appreciate any insight/ideas others have.

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