My question was in response to this...
...As for Thich Nhat Hanh, he is a fine example of a Buddhist teacher whose enthusiasm for Hua Yen has resulted in him completely losing the plot. His (and his disciples) obsession with Hua Yen ideas of interpenetration, interconnectedness and so on have led them to prioritize other things than what the Dhamma is centrally concerned with. For example, environmentalism, social activism, and the energetic popularization of Thich Nhat Hanh's crypto-Spinozoan pantheist ideology. But efforts aimed at the purification of mind and liberation from dukkha become only a secondary or tertiary concern. And so to this extent it seems to me that they have gone astray from the teachings of the man who said: "Both formerly, bhikkhus, and now, it is just dukkha that I teach, and the cessation of dukkha."
Far from making dukkha and its cessation his central concern, Thich Nhat Hanh goes out of his way to sever them from the Buddha's teaching, for example by claiming that dukkha is not one of the three common characteristics of conditioned dhammas.
Not that Thich Nhat Hanh is the perfect teacher, or that some of the above may not be true, but he does teach the Buddha's dharma- the 4 noble truths, the 8 fold path, the 12 links of dependent origination, etc. He talks about interdependence and inter-being within that larger context, as an aspect of what Buddha taught. He emphasizes engaged Buddhism as a part of one's practice, as a form of right action, not as something which has nothing to do with the dhamma.
This may not be evident if one bases their assessment of TNH upon a few internet articles or one of his popular books. That's why i mentioned what is probably one of his most important books Heart of the Buddha's Teaching, a nitty-gritty presentation of the Buddha's core dhamma teachings, in other words the basics as covered in Theravadin Buddhism.
Everything is interconnected. Staying aware of interdependence helps us to see these connections.