It’s depends, in my case it was easy. Not Aus but America and I think it’s similar.

Before granted citizenship I have gone through applying for visitor visas to The USA. (For separate purposes/occasions)

-I was not employed at the time but my family managed and maintained the good balance of financial as they always do for all of the children. Stable income, good bank account records, no debt and so on.

- I have every intention to return home as I was a primary caretaker for my parents and I was the “head of the household “ who managed the family business as well as day to day lives.

-I have properties in my name, fully paid for, all of it.

- I have travelled outside the country, many trips and always return, never abused visas.

My daughter was in the same situation with exact same numbers of days conflicted. Whilst still in BKK she and I returned to the immigration office at the airport and got this answer . Several days (no greater than 3) overstayed with prove of returning tickets is allowed without any consequence. That was 5 years ago that we did it. Her passport is American’s.