Don't think so, MOTG.
VERY unlikely that internal candidates will be considered for CEO - and VERY unlikely that current GM Safety has enough business experience [yes - you actually do need some to run ATC]. Also has some awkward skeletons in the cupboard, I hear.
My sources say to think lateral - AND to think Labor - i.e., the CEO will be a direct Labor appointee [within the constraints of natural justice, etc] - and the GM ATC [or whatever it becomes] will be a 'return to the fold' from 'days of yore' - i.e., a former insider who has become an outsider, who will become an insider again!
If this happens, current GM Safety will go.
Ain't the rumour network grand!!