NYPhilharmonic Plays Bruckner Symphony #9 - Missed Mozart Piano Concerto Though

Today's rehearsal began with the grandeur of Bruckner's 9th and final symphonic masterpiece.  The visiting maestro was world renown pianist & conductor Christoph Eschenback (b Poland 1928).  I was hoping Mozart's Piano Concerto #22 would be #1 on the program.   I'm sorry to have missed this performance.  The last rehearsal I attended at the end of February, New York Philharmonic Conductor Jaap van Zweden (b Netherlands 1960) lead the orchestra.  Maestro van Zweden took over the position vacated by former conductor Alan Gilbert at the start of the year.  In February Mr van Zweden turned and welcomed the audience and announced the microphone would remain on during the rehearsal to allow the audience to hear what was being said between himself & the orchestra at all times .  This was in response to the numerous  requests of many patrons.   This was thrilling and enlightening.  At today's rehearsal Conductor Eschenback said good morning to the orchestra but did not acknowledge the audience.  The microphone remained on during the Bruckner's Ninth Symphony. The symphony was played in its entirety without pausing.  Afterwards, the conductor had the orchestra return to the last movements after giving his comments.  Although the microphone remained on, the exchanges between the conductor & musicians was not decipherable.   It's understandable that some conductors, especially guest conductors may find this invasive & uncomfortable.  It was possible to discern a professional & friendly rapport but as to what was said & heard there was nothing more.