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Why do the boxes that indicate Channel Number on a digital TV set when you change channels also cut the captioning until they disappear? As soon as you change channels you get both the picture and the sound (which I can tell is there with HA but not understand) while a box or boxes display information about what channel you have selected for several seconds. The same thing happens when reception comes back if there is a slight interruption in reception and I find it annoying although no where near as much of a problem as some of the things others have reported.