One of the conditions facilitating communication between teachers and students is that each of the two categories understands the need and the merits of good communication. In addition, the institutional framework must guarantee this and establish the conditions for its proper functioning.
Trust from both side, teacher's/coach's open mind. The process should be sharing, not giving the wisdom "from up to down". Both qualities (trust and equality between the guide and student) creates new space, where wisdom borns in the sharing experiences and opinions. Thanks for asking!
Be clear about the rules of engagement. For example, if you plan to speak for 20 minutes and are not interested in taking questions until the end, tell the students how you want the experience to proceed. If you plan to open the class up for discussion. Announce your interest in listening to what they have to say. Toss out an open-ended, provocative question to get them talking. When they do participate, let them talk. Redirect them only when they are creating an unsafe classroom, e.g. dropping the f-word. At the close of the discussion, summarize what you heard. If you disagree with any of the points that were made, hold your critique until they have had a chance to present their case. Think about the last time a friend would not let you finish what you had to say by interrupting you. Create a scaffold for classroom engagement, i.e. dyad discussion, small group discussions, and full classroom discussions. This way student who are shy will feel more comfortable with full classroom discussion. Finally, manage the discussion. Some students will overtalk, others will not talk at all. If you want to know what they are thinking, or how they are thinking, you need to hear from everyone in the class at some point in the semester. Hope this helps.