Utility company has installed OOTA LoraWAN water meters.
How do I listen to that data?
They are in private network and it looks like I can not have one device sending to both networks at the same time or read it in transit.
Can I use network peering/packet brokering or some strategy that allows me to monitor the data at closet point on the spec?
Most likely, you don’t have access to the root-keys / session-keys and the communication is end-to-end encrypted between the meter and the utility company. The only way to get access to the data is then through the utility company.
You could setup your own LoRa gateway to receive data, but the only thing that you will see is encrypted data traffic.