Nope, would have needed to do a flight test first. To get an instrument or instructor rating based off ADF conversion requires an initial flight test for that rating.
Are you saying he wasn’t granted G3?
The AAT said this at para 5 of its reasons:
Prior to the commencement of the hearing, CASA conceded that a number of the authorisations sought by the Applicant should be granted and the Applicant advised that he no longer pursued certain authorisations.
What were the authorisations granted to Clarke by CASA?