Cypress Semiconductor Program Manager interview questions

This interview was set up through a networking contact. (Point to Note ;- Networking is key) Had a series of very fruitful email communication with the hiring manager. These email exchanges established the need/match for each other for proceeding to the next step - Phone interview. And then the phone interview took place. It was a very detailed interview, spanning both technical and soft skills and went on for about an hour. The phone interview went very well and the hiring manager said that he would discuss with the HR and have me come over for the face to face interview. After a couple of post phone interview emails, suddenly there was no communication whatsoever. I am not sure what happened internally.