Did Japan have a practical plan to invade Australia?

Did Japan have plans to invade Australia?

Japan had ideas about it, but an actual invasion was probably not practical.

Japan had ideas and aspirations concerning Australia, but an invasion was probably not realistically achievable. The answer separates ambition from the practical ability to carry it out. It gives no force numbers, timetable, or detailed invasion scheme. A hypothetical war aim is therefore poor evidence for an executable operation.