I  believe the swastika shows the relationship between the third eye and solar chakra. I have seen ancient Irish manuscripts however that show all the chakra's as swastika's along the world tree. I think the pine cone of Dionysus is the oak seed of the Druids.

Dionysus name relates to the concept of bliss from activation of the dew. Zeus and Dionysus is Jupiter is spirit and the crown and the third eye. This relates to Zeus is spirit and spirit is manifested in dew the physical with the third eye and how it connects into the soul. Hence Dionysus is Zeus manifested. The Taoist texts mention such.