Today I noticed that the NBC affiliate in Boston (WHDH) now appears four times in my guide. Two have always appeared (7.1 WHDHDT and 7.2 WHDHDT). The other two are recent (7.1 WHDHSTA and 7.2 WHDHSTA2). The two 7.1 channels are carrying the same programming as are the two 7.2. Only difference is in the description where the "new" adds "Special Temp Authority" to the description. Any idea what is happening?