Probably has something to do with clan-animal-totem relationships. > "Each clan is identified with a special totem (sacred animal) passed down from the Dreamti

Probably has something to do with clan-animal-totem relationships. > "Each clan is identified with a special totem (sacred animal) passed down from the Dreamtime by successive headmen or lore keepers. The totem differs according to where the clan lives. As descendents of the ancestral Gunyunggalinglung beings (that the Aboriginal people believe made the world), to intentionally injure, kill or eat one’s clan totem animal brings great misfortune on your all your extended family." https://www.jenolancaves.org.au/visitor-info/aboriginal-culture/ https://www.jenolancaves.org.au/visitor-info/aboriginal-cult... E.g. if a Protestant family had a marriage relationship with a Catholic family, they might not discuss certain rituals or topics specific to their tradition at large inter-family gatherings.