MSS: You’ve got to be kidding. I cited Rav Ahron’s published opinion in Mishnas Rabi Aharon on the previous page of this thread:
Rav Aharon and Rav Schneur (like Rav Elchonon hy’d) would under no circumstances walk into YU. At the funeral of a close friend of Rav Schneur that was taking place there, he had his driver circle the building until the procession came outside, at which point he joined.