Both sales and marketing hold valuable insight.

Working through a sales cycle can leave a salesperson scratching his/her head - sometimes customers are hard to understand.  But just because you are having a hard time understanding the customer does not mean that you are doing something wrong, sometimes you just need the perspective of a different department - marketing.  Marketing sees a different side of customers and potential customers than sales and you should be actively seeking out the marketing departments information and vice versa.

"As close as you are to the client in a buying process, you're not the only one reaching out to them or who has visibility to what they are doing. Communicating regularly with your marketing department will keep you informed and allow you to reflect consistent messages in client conversations."

I found a good article by Miller Heiman that focuses on the importance of alignment between sales and marketing.  I think you should check out this quick read to see if you could benefit from some open communication.

(Note: This article expires.  If you are interested check it out soon!)

-Brianna