Coupling two Domoticz instances together

[DeBaat]

Hai,
Would it be possible to have two Domoticz instances send information to each other?

I have Domoticz running on a RPi 3B+ and one on a Synology NAS.
Both are running on the same version (latest stable).
It has been working for a while in a master - slave combination where the Synology was the slave to the Raspberry where I could see NAS connected devices on the RPI.
Now I would also like to have the device information from the RPi send to the NAS.
Would that be possible?

Hope to get some directions in which to look.

Thanks.
Jan