Hi there,
There's so much nuance to this answer.
Fundamentally, you have to think “If I were an interviewer, what would I do”. Remember these interviewers are people.
So, yes, you have to pass the airport test.
Yes, if you're unable to communicate and you come across poorly, the case doesn't matter.
Yes, if they really like you and you have good energy/attitude, they will be a little more lenient.
They're trying to see if you can be a consultant.
If they think they can put you in front of a client, if they think you can work in a team, if they think you have the grit to learn, the lack of ego to receive feedback, and the capability to do well, they are more likely to hire you.
Interpret this how you like :)