As a young INTJ I was quick to walk away even if someone was in mid-sentence. Then I learned it is better to use an exit phrase especially if it’s someone I have to see often.
Usually when i approach stranger or someone that unacquainttence with me, i just blatantly giving statement and asking something. And when the conversation ends. They're expression will be like "Ok, that's all?" Which sometimes triggers my anxious instinct, like "Ok, should i be bothered with this? did i delivered the sentence clearly? Oh you know what, forget it, it's not like i'll meet them again" Indeed i realized it's a bad way of thinking. Well simply because they're not worth my time to think of. But when i do it with someone i actually care, i will give them some consent and explanation within the situation we're on, so i could help them get through it. Because i care. I guess that's the difference
I sometimes have this in an discussion, when i know the other person is up to debate, but is not right, and want to take on the Discussion. After that i feel like i loose the Debate and have low assertiveness and hate myself, cause i dont know to argue more. The painfuelest thing is when they think/say they won the debate cause i dont have more to say, but its only my brain who´s stopped working.