Originally Posted by shefgab

There are a few non-Schengen gates at the far end of T4, which is where the IB metal flights to the UK leave from (and I think BA LCY?). And unless I got confused by the signposting in T4S, there are a few Schengen gates in T4S as well. Gives the airline and airport operational flexibity to have both type of gates in both terminals.