Let me guess , early 1990's , with an ex Interflug captain ?
No, more like 1999 or 2000 and from the reaction I got when I demanded to speak to the PIC from DLH, he might very well been management. From his dialect I`d guessed he was western German....and he was certainly not willing to apologize nor to see his "error". he had an issue with GND before he switched to TWR.