Ah, OK, I could be mistaken about what KRON is transmitting on their OTA channel. So you're saying that if you look at 4-1 OTA, you get the "regular" KRON programming, but OTA 4-2 is carrying the "HD fluff?"
If that's the case, then I'm sure they intend for DirecTV to carry 4-2 on their MPEG-4 tier, as that's the only "channel" that has any HD programming. I haven't checked, but when the "My NetworkTV" programming comes on, does it appear on 4-2?
When you think about it, it's kind of strange that KRON is being carried in MPEG-4 at all, since it is not one of the "big four" network stations. They must have greased D*'s palms to get that carried.