Does anyone understand how the cost overrun facilities have been...

Does anyone understand how the cost overrun facilities have been calculated?

It says in the notes:
"US$160m total Cost Overrun funding, 50% debt funded with the remaining US$80m to be funded by equity."

But it also says that:
"EFA will also provide a subordinated Standby Liquidity Facility (SLF) of up to US$200 million under the CMF to helpmanage any increases in capital expenditure and operating costs incurred during ramp up. Export Finance Australiaalso has conditional approval to provide further funding of up to US$75 million on its Commercial Account toparticipate in the ECA covered tranches and Cost Overrun Facility (COF). NAIF has agreed to provide additionalfunding up to A$50m via a proportion of the COF."

Can anyone help me understand if these Cost Overrun Failities are part of the $1.68b funding required? Or on top?

Trying to work out the approx Equity required at the cap raise. My guess is about $600 million aussie.