real time captioning is always slow as the captioning people do not have an advance script to work from... Recorded programs, movies, shows and the like are captioned ahead of time and are usually much closer to the action than was the case with the Hatfields and McCoys.
If i did not have the captioning and my hearing aids, i would have no bneed whatsoever for the sound button... all consonants, all vowels, all musical notes and all thunder, trees crashing, bullets flying, bombs exploding and whatever else happens would be as silent as a ghost for me... stone, dead deaf!