I have posted a question on - Biqquery quota limits on UDF

This question is related to this limit only but information required is different. I want to know that is the meaning of concurrent. Let say I trigger a query like Query1 that that query execute till 10 sec. After 20 milli second I will execute same query and that also execute till 10 sec. So can I say that both queries are different?

I am executing standard sql query with UDF which has 6 concurrent query limit. But I executed this standard sql UDF query on 20 parallel threads with the help of java. I didn't get any concurrent limit exception. I was tring to test this limit as I have to execute this query on 1000 threads.