Update on what I learned from UDI support.
MQTT is installed, however PG3 and PG3x make use of a private MQTT broker for internal communication between the various components, and that package is specifically configured to support PG3x.
They advised I should just use another mqtt broker on another device on my network, so I used a broker on my Raspberry Pi that is for a different project, but is now serving two purposes.
I hope this helps.
