but in that moment when the teacher is teaching and the student is absorbing ...mind to mind....is there still not a hierarchy...
Depends on the teacher and depends on the student.
Teachers have only one job -- lead students to liberation. If they cannot do that, they are stealing people's precious human birth.
Most of the hierarchy in Buddhism comes from Asian cultural forms. It can be dispensed with in the modern world.
Of course, we need to respect people and their choices -- so if someone is keen on a super-hierarchical school like Shambhala International, we should respect their choice. Of course if I am going to see some traditional Asian teacher, I will do prostrations out of respect. When you have respect, you can't have pride. Respect is the real prostration. When ever you respect someone, then you are prostrating to them.