Legally you are correct however Schönefeld's terminal had been intended to be closed and torn down for some new government VIP area and hangar space until recently. Now they keep on using it as separate "BER Terminal 5" for Ryanair and others.
Today's BER northern runway had been Schönefeld's former southern runway but it has been rebuilt since from scratch being a part of BER. One of the earliest parts being completed. Like the new BER tower that has been operating for years having met the original schedule.
Last edited by Less Hair; 1st Nov 2020 at 12:59.