The Tv is on all day here as background noise.
Sometimes Dd who is 4 months old watches it but most of the time she's not interested in it unless her 5 year old sister is watching cartoons and then she gets drawn in by the colours and sounds.
Dd is my first baby and her sister is my step daughter but I've never worried about the Tv being on to be honest. She spends majority of her days playing with toys or her dad, sister and I. She doesn't know what she's watching anyway, even though it's on all of the time none of us watch it for extended periods of time, I just hate silence.
Dd will even sit next to her dad in the bouncer at night when it's late and she's awake and watch him play xbox. :O