Hi Lisa:
Great comments. It's almost as if we are engaged in an intimate conversation with a trusted friend discussing a difficult personal situation.
There's emotion (enthusiasm, passion, excitement), knowledge(lecture, stories, questions), and leadership (trusting students with information, guiding and facilitating, rewarding and recognizing). The student should feel "filled and satisfied" at completion.
Or, it could be blah, blah, blah, telling vs teaching,; reading PPT slides vs sharing pertinent examples; taliking vs creative, thought provoking critical thinking questions. Artificial vs sincere.
Delivery is dynamic!
Regards, Barry