I travel with my wife from Rome. Due to technical reasons, we have to take different flights. My flight goes out from FCO airport terminal 1, while her flight goes out from FCO terminal 3, at approximately the same time. Since she does not speak English/Italian and is quite anxious about being alone, I want to go with her all the way to the departure gate in terminal 3, and then go back to terminal 1 to take my flight. Is it possible?
On the map, it is only 7 minutes walk, so technically it should be easy. My main concern is the passport control - if I go through passport control at terminal 3, I am formally outside of Italy. Will I be able then to go back into Italy to go to terminal 1?
Are there any other potential problems in this plan?