Just because someone does not have consistent eye contact with you does not necessarily mean they are not listening or paying attention. In business meetings many are multi-tasking and are used to doing several things at one time when listening to others, particularly those running the meeting. You need to evaluate the situation to see if they are not interested or simply multi-tasking.
Normally, when speaking, your eye contact decreases, but when listening, your eye contact increases. This is the flow of eye contact in normal conversation. The reason eye contact tends to decrease while talking is because you are familiar with the subject and can do it with your eyes shut. As in the case when the one that is running the meeting is constantly multi-tasking.
On the other hand, when listening, your eye contact tends to increase because you need to “listen” and absorb what is being said. This does not mean that you do not need to look at someone when talking and that your eye contact is not important. Instead, know that eye contact tends to decrease when speaking, so try to maintain better eye contact when speaking with other others.
Remember that the lack of eye contact may not have anything to do with you. If you really fell that you are disconnected from someone you may regain his or hers attention by saying something like, “Does that sound like a customer of our company?”, or “What current accounting procedures we currently use?” In other words, get them back into the “meeting” by asking them a question that is relevant to the conversation.