Able to receive payloads from end node via gateway registered in another organization

I have two organizations that uses same network server. So end node from one organization able to deliver payload to application server using gateway registered in another organization.
Here is gateway of loraserver organization routes payload from end node:

But this end node is from application in another organization:

Not sure if it is expected behaviour.

Yes, sure. It’s normal behaviour. LoRaWAN gateways receives all packets from endnodes that are in its service area. But received payloads are encrypted and need further processing.