What is the difference between a "message" and a "connection request"?

Messages are exchanged between callers using the voice personals mailbox system, and between callers on the live Connector. They can be used for introductions or to get to know someone else better. You can exchange messages many times. You can also leave them for callers on the Connector or in callers' voice personals mailbox. A connection request is a special type of message inviting a caller to join you in a private live conversation on the Connector.