The more you are used to eating in an average meal, the longer it takes to feel "full".
However, once the taste buds are firing, it’s pretty hard to stop eating mid meal. One way is to take a little bit of food away from all the other food, eat it, and then force yourself to sit there while your blood sugar catches up to tell you if you still need more.
This is why I suppose I don't enjoy eating when I am "starving" as we like to say when we haven't eaten in a while. I am so hungry that I can't even enjoy the meal because the hunger pangs I am feeling don't subdue until I am practically done with the meal, and sometimes, even afterwards.
Near impossible these days, I just had toast and coffee while scrolling through HN.
Eating while watching TV doesn't impact my eating choices.