I was recently watching an ABC network program on analog that had a SAP alternate audio which was working and differed from the primary audio.
Just out of curiosity, I tried switching two different brand CECB's to the alternate audio at the same time it was working on analog.
The digital alternate audio was the same as the primary audio.
From what I have since read elsewhere, networks may not be providing alternate audio in digital broadcasts to local broadcasters.
Anyone have a working digital broadcast alternate audio?