These days, in many organisations, interviewing is left to the poor individual who needs a member of staff, irrespective of whether they have any experience of conducting successful and appropriate interviews or not.
Not only can this lead to inane questions and long diatribes about the benefits of working for the company, but as a direct result does not give the candidate the ability to shine (or demonstrate their unsuitability), with better candidates slipping through the net.

We all know when telephone selling doesn’t work - we’ve all been on the receiving end of mind-numbingly awful attempts to sell over the phone.