Dublin Airport were trying their very best to organise this last year.
The airport and its departing services were in something of a mess due to a storm. Our flight to Manchester was the only flight scheduled to depart on time, so that was of course the stuff of dreams.
One of our allocated gates (we were allocated 9 gates over the course of the evening) was boarding a flight to Oslo and the gate staff getting irate at defending their gate from Manchester travellers... The reason for this of course was that the all the monitors etc told us mere passengers that the gate was boarding passengers for Manchester.
When they eventually checked the monitors a few choice words were exercised...