MQTT_Eventstream in wrong direction

I have 2 homeassistant instance; primary site at home and secondary site in a hollidayhome. The instances is allready connected with site2site-VPN and sharing a MQTT-broker.

I need to monitor and control my holidayhome from my primary instance of HASS.

My problem is that every event on primary is forwarded to the HASS in holliday home but not the other way around, like I need.

What is wrong?

My setup is:
PriSite (Home):

  publish_topic: priHass/hass
  subscribe_topic: secHass/hass

SecSite (Holidayhome)

  publish_topic: secHass/hass
  subscribe_topic: priHass/hass```

I am still struggling with this. Anyone?