Responsive to a client application initiating a synchronous communication with a server application by sending a request via an asynchronous communication manager, one or more checks are performed to identify a cause of any failure to provide a response to the client application satisfying synchronous communication criteria. The method comprises the steps of identifying a group comprising one or more vectors which have undergone a transmission error, and replacing one or more speech recognition parameters in the identified group of vectors. The cushion has a chin support area that avoids contacting the user’s chin when the user’s head is in a neutral position and contacts the user’s chin when the user’s neck is in flexion.