This model believes that for an effective communication to take place the source and the receiver needs to be in the same level, only if the source and receiver are on the same level communication will happen or take place properly. So source and receiver should be similar
For e.g. Communication skills on source side is good then the receiver should equally have good listening skills.
We cannot say the entire message passed doesn’t reaches the receiver has it is because the receiver may not good in listening, so only for the effective communication the source and the receiver to be in the same level.