Rabbi Farro studied at Kol Torah in Bayit Vagan before he became a Lubavitcher. After he became a Lubavitcher, the Rebbe told him to stay in touch with Rav Shlomo Zalman Auerbach. So he did. And Rav Auerbach told him, "I'm delighted to hear that the you have become a shliach for the Rebbe."