We were in Pisa last month and it was apocalyptic in and out.
Two desks on the way in to process 3 flights, one guy was checking and stamping everyone’s passport the other guy was waving people through as fast as he could.
Coming back there was a huge queue for non-Italian check-ins, a queue from the check-in to security, a queue from security to passport control, a queue from passport control to the gate (which comically changed three times, causing everyone in the queue to about face)
Manchester never looked so good. Allow many hours & good luck