Alex is most likely to develop an attitude that internal communication is less important than external communication.
His manager, Susan, is constantly stressing the importance of communication, however, the only communication she seems to be having is with her external clients. She doesn't have enough time to pay any attention to her internal 'clients,' or rather her employees. Thus, Alex will start thinking that communicating with your employees is not as important as keeping the communication alive with people outside the actual company.