Hi Ryan,
Yes, I am still trying to find a way that is more reliable to avoid double chime. Actually, even double notification (I have a similar issue with PushOver).
The log looks like that:
dev:202020-04-05 09:23:35.098 am infoAeotec Siren 6 - Chime stopped
dev:242020-04-05 09:23:32.141 am infoDining Room Motion Sensor: motion is inactive
dev:162020-04-05 09:23:31.837 am infoGarage Motion Sensor: motion is active
dev:162020-04-05 09:23:31.758 am infoGarage Motion Sensor: motion is active
dev:72020-04-05 09:23:29.962 am infoGarage Ceiling Light switch is on
dev:72020-04-05 09:23:29.941 am infoGarage Ceiling Light Button 1 pushed
dev:162020-04-05 09:23:24.296 am infoGarage Motion Sensor: motion is active
dev:202020-04-05 09:23:24.269 am infoAeotec Siren 6 - Chime playing '26. Gong'
dev:202020-04-05 09:23:23.488 am infoAeotec Siren 6 - Chime playing '26. Gong'
dev:322020-04-05 09:23:23.420 am infoIndoor Garage Door was closed
dev:162020-04-05 09:23:23.357 am infoGarage Motion Sensor: motion is active
dev:202020-04-05 09:23:23.268 am infoAeotec Siren 6 - Chime playing '26. Gong'
dev:162020-04-05 09:23:22.935 am infoGarage Motion Sensor: motion is active
dev:162020-04-05 09:23:22.830 am infoGarage Motion Sensor: motion is active
dev:202020-04-05 09:23:22.580 am infoAeotec Siren 6 - Chime playing '26. Gong'
app:22020-04-05 09:23:22.515 am infoTurn On Garage Ceiling Light when Garage Motion Sensor active Turn On
dev:162020-04-05 09:23:22.352 am infoGarage Motion Sensor: motion is active
dev:202020-04-05 09:23:22.134 am infoAeotec Siren 6 - Chime playing '26. Gong'
app:382020-04-05 09:23:19.001 am infoTurn On Garage Ceiling Light when Indoor Garage Door Opened Turn On
app:382020-04-05 09:23:18.991 am infoTurn On Garage Ceiling Light when Indoor Garage Door Opened Turn On
dev:322020-04-05 09:23:18.840 am infoIndoor Garage Door was opened
dev:322020-04-05 09:23:18.834 am infoIndoor Garage Door was opened
This is with the rule changed (from my understanding if your explanation):
I've tried the "denounce" from the other thread, but the only thing it was doing was to push in the future from few milliseconds the double chimes. I tried for a week with a lot of double, triple and more chimes.
For context, the double message thread here (How to eliminate double chime) was around the Zoos 4-in-1. The Zooz has a "suppress duplicate motion" and for the contact sensor was a home-made Debounce virtual device.
Now, I am using a generic z-wave contact sensor only on that rule. I'm trying to find a "universal" solution regardless of the device. The Zooz issue is fixed by not double opening the light, however, the chime remains an issue... a noisy issue 
Sometimes I can chime 5 times in a row if someone opens the door. I suspect this: "Garage Door was opened" is the issue.
For everyone information, I also tried:
Which is trigger for any change, then to use a condition to filter to only the opening. No better result.
