Ah,
if I were the Head of Training at an ATO, perhaps I'd view ATO/DTO as semantics.
If, however,
I had a DTO nearby, but the nearest ATO was some distance away and/or more expensive, I might take a different view.
ROTFL..... do you think it’s going to make any difference at all whether it’s an ATO or DTO?. Why would an ATO be more expensive?