Arimeh, we have days like that, the tv on all day. And most of the time neither of the girls pay attention to it. Actually DD1 didn't even notice the tv until her 2nd birthday.
But that is also why I ask the question. Almost everyday when playschool is on I go and make dinner etc. But I don't consider that babysitting.
I think that if my girls would sit still for longer than 5mins I would be seriously worried. Actually to be honest if they sat still for 5mins I would probably be asleep!