u/Equivalent-Gift-6602

I'm planning to apply for an exchange student in UniMelb and the Australian department of home affairs says:

We can ask you for evidence of your English language skills after you have submitted your application, at any time while we are processing your application, even if the Document Checklist tool shows that you don't need to provide evidence of your English language skill when you submit your application. 

Are there any cases who were actually required to submit English scores? Asking this because standard TOEFL test is all I got. It doesnt seem to be a problem in the uni but the home affairs doesnt accept standard TOEFL i guess. Can somebody share their visa processes?