How run the next transformation only when all features have gone trough the transformer beforehand?

I want to delete the input data in my script with the help of the Featurereade and the hub FileDeleter , but only when all features have been beforehand wrtitten to an export map in the FeatureWriter (see image below). So I don't want featurereader and the FileDeleter already running when not yet all files have been exported . I was wondering how that can be achieved in FME desktop? In case my question is a bit vague, just let know.