I'm sorry, I wasn't aware that Australia was occupied by Imperial Japanese forces that could have been prevented by more foreign aid. In fact, I'm pretty sure it wasn't. Nor did it have to surrender like France to avoid occupation. Australia got all the help it actually needed as proven by Australia remaining free for the entire war. Supporting Stalin was a mistake, but don't pretend that Australia is Norway.
The British can not get to Australia without securing their supply lines through the Mediterranean Sea and Indian Ocean. You can blame them for signing the WNT which prevented the Australian navy from maintaining a battlecruiser force and the infrastructure to support it, but after that the UK had no options. If they'd stripped the Atlantic or Mediterranean for ships to send to Australia they would have relied on American supply and America could not supply them with shells. After Force Z was sunk there was no slack.
ABDA command collapsed in March 1942. By June 1942 USS Enterprise was operating in the Solomons and while out of the direct line to Australia was fighting the IJN force threatening Australia and New Zealand. That's only two or three months running distraction operations in the central pacific before moving into position to defend Australia. American submarines were operating out of Australian bases as well.
The Char G1 project runs from 1936 to 1942 with no production ready product. 1940 is too late to change that. What France has is the Char B1. Some doctrinal flaws can be fixed by just changing doctrine, but a one man turret is something that can only be fixed by completely redesigning the tank. Which the French are already doing but can not do fast enough. Just the bad turret design puts the French tanks at a qualitative disadvantage in tanks.
And I'm not sure of France's capacity to make enough radios either. Especially if the aircraft you want them producing more of also need them. Maybe that's a problem they can solve by throwing money at it in 1940, but they're in the state they're in because they don't have money.