The AAIB report only states the unit has provided the order in which they were TRIGGERED, rather than actually stating the order in which they ILLUMINATED, that may infer that there is no way of knowing if they did actually illuminate?
Absolutely! Like when you switch on the light in your living room by flipping the switch and record that fact.
Actual light needs electricity in your house, all good connections from the switch to your lamp and of course a working filament in said lamp.
So w/o description what effectvely was recorded, when AAIB refers to "being triggered", we cannot be sure, if any warning light did illuminate.