Greco-Buddhism or Graeco-Buddhism was a cultural syncretism between Hellenistic culture and Buddhism developed between the 4th century BC and the 5th century AD
https://en.wikipedia.org/wiki/Greco-Buddhism
I wonder how much of the "mystical practices" in "Orthodox" Christianity trace back to Yoga mystical practices from India that also over lap with Buddhism and Hinduism or if the practices of Yoga did not originate in India but from closer to Greece and influenced Buddhism which came after Yoga