https://community.ricksteves.com/travel-forum/transportation/my-recent-experience-with-ees-in-rome-fco-airport
I didn’t have one! I flew into Rome on 9/23/26 and landed about 10:30am. I was not connecting with another flight. I had prepared myself for a lengthy wait at passport control. However, they were not using EES then, just passport scanning and facial recognition. Took me less than 10 minutes!
https://community.ricksteves.com/travel-forum/italy/just-took-the-new-alaska-airlines-sea-to-fco-flight
But the passport control lines were the worse I’ve ever seen. Very long and very disorganized. I travel with a wheelchair and usually get escorted to an agent in less than 30 minutes. This time took 2 hours
So the answer to the question "How long does it take ...?" is 'your guess is as good as any other'