HA in two different locations,is this possible

Guys can you tell me if this is possible.
I have HA and would like to setup HA at my brother home, is possible to run two HA basically as one. Maybe one dashboard as mine and the other as my brothers so I can control it etc.
Or you can suggest something different

Thanks

You can configure multiple instances of Home Assistant in the companion app:

You might also be able to set up two way sync using mqtt, but I’d just go with the above.

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You can also try remote assistant in the HACS. I currently use it for 4 HA instances in 4 different locations.

MQTT evenstream