This is a chapter headline from ‘ Whatever you think, think the opposite’, one of Paul Arden’s witty and perceptive books. It concludes:

“In an interview, it is better to listen carefully to what the interviewers have to say than put on a show of your own brilliance. That way they will be interested in you without you saying a word”. 

A pitch is a form of interview and having sat through a number of rehearsals recently, I know how easy it is to fall into the trap of talking at  the prospect, rather than with.  Communication is, or should be, a two way street.

This is why rehearsal is essential.   (Best Practice Guide)

Encourage interaction and leave plenty of time for questions.  More than has been asked for, not less!