Elapsed time for Test Collections are incorrect for parallel runs

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If you look above I have a collection called Platforms that ran 2 suites called Dashboard and Logout. Obviously, the Logout suite finished before the Dashboard suite and the Dashboard suite was the last to finish at 26 seconds. Should not the Platforms collection, as a whole, be considered to have finished in the same time the Dashboard suite finished? Why is it that Platforms time is treating parallel tests as if they are running sequentially or that it is adding extra time via uploading reports or other processes?

As a side note how are Test Collection reports initiated and or generate after the collection is run? Given there are no listeners for test collections. How does Katalon determine when the collection is done?