I've booked flights for next Tuesday and my ticket issuer has given me some cause for concern (after the fact, of course). I'm transiting in FCO (Rome, Italy) to EVN (Yerevan, Armenia).
I carry cabin luggage only. There is a 5.5 hour layover time. I am not of a nationality that has "rights" to enter the Schengen Area, nor do I have a Schengen visa, but I am also not on any red lists requiring an type A (airside transit) Schengen visa. For example, in 2021 I overnighted in Frankfurt without hassles, leaving for another non-Schengen country in the morning.
Is there a path avoiding passport control, which I can use to move between terminals 1-3 freely?