I don't care if LE told them they passed. I kind of don't believe in lie detector tests. So, only the fact they took them really matters to me and it's because of the way questions and answers are handled.
A person can't word salad a lie detector test. The questions usually are yes or no questions from my understanding. A person could still lie. And a person could say they don't know because they really may not know.
So, they have been asked (and answered) blunt and direct questions about this case.
I don't know what happened to Summer, and i certainly do not know how they answered their lie detector questions (as in honestly or not).
But, i believe they did answer the questions. And LE is acting as if they cannot learn anything else from these people at this time.
But, i know the TBI doesn't give up. They would question them every day if they (the TBI) believed that would help solve the case.
But, i agree with you, they've probably assigned someone to try to untangle the SM spaghetti. Maybe they will find something to help Summer in all of that, but i just don't know.