@Tiki typically when you have a medical episode overseas the insurer will authorize minimal treatment for the most emergent issues and once stable then look to repatriate you for anything that can wait to be done back in Aus including rehab.
If you can be repatriated but can be medivaced a shorter distance the insurer can also direct you to be treated somewhere else where the costs are more favourable for them.
A friends husband broke his leg very badly skiing in Switzerland, his insurer had him flown to France by chopper where it was much less expensive to have his leg set (he required surgery and multiple pins) even including the helicopter evac than it would have been to receive same treatment in Switzerland. Then once he was cleared to fly he came home in J, and follow-up revisions and rehab were done here (not covered by TI, just Medicare and his usual health insurance).
Insurer cant reliably move or repatriate someone from a war zone, so best to avoid transiting volatile areas when there are other more stable options.