execute scenario after first scenario is finished

I want to execute my second scenario when my first scenario is finished.
My first scenario consist of Auth call which will be executed once and auth tokens will be used as feeder to other scenario which will repeat for n number of times.

Scenarios are created dynamically and executed concurrently.

  scnList: _*


As both scenario are concurrently executed feed to second scenario fails as auth tokes are not added to the feed.