Off top of head, happy to be corrected.
LOSS OF THRUST BOTH ENGINES you will not lose AC power as long as the engines are windmilling, the CSD's will see to that.
If you're having a really bad day and the LOSS OF THRUST BOTH ENGINES has been caused by turbine seizures on both engines at the same time then you will lose AC power.
However, of course you would action the ENGINE FAILURE/SEVERE DAMAGE/SEPARATION checklist.
Hope that's correct.
Cheers