Australia just need to get to HT and regroup at only one behind. If you're still in the game anything can happen - just ask Saudi Arabia.
With the caveat of it only one round of games (and, indeed, only one day), France will be looking at the other three teams in their group and all four teams in the group they're paired with, and won't have been concerned by anything they've seen. That said, I'm sure they'd prefer to not run into Argentina in the last 16 - a possibility which has arguably increased over the course of the day.