according to Marvin Schick, 2012 blog>
As I was standing outside the home of Rav Shneuer Kotler during shiva on a brutally hot early July night in Lakewood, a car pulled up and two men got out. They opened the back door and virtually carried Rav Joseph B. Soloveitchik into the house. He was extremely frail and in declining health. I went inside and heard him say to Rav Malkiel Kotler, “I was a friend of your grandfather, I was a friend of your father and, im yirtzeh Hashem, I will be your friend.”
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It is known that Rav Aharon did not have a favorable view of Yeshiva University. I was told that in his 1930s fundraising trip here, he gave shiurim at Yeshiva and was not happy about what he saw.
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shortly after the Second World War a serious effort was made by officials at Torah Vodaath and Chaim Berlin to establish a joint university-level academic program that would take place in a yeshiva setting, the intent being to deter their students from attending Brooklyn College in the evening after the mandatory two sedarim in the Beth Medrash. When Rav Aharon heard of this initiative, he immediately instructed that it be abandoned and it was abandoned.
During the fervid 1953 battle over the draft of girls into military service in Israel, Rav Aharon reached out to Rav Soloveitchik, hoping that he would come out publicly against Ben-Gurion’s decree. There was a meeting at Rav Mendel Zaks’ apartment in Manhattan. Rabbi Dov Ber Weinberger drove Rav Aharon to the meeting and he was witness to what happened. …
After more than a half hour of futile effort to get Rav Soloveitchik to publicly oppose gius banos, Rav Aharon came up with the following brilliancy, of course in Yiddish. He said, Bostoner Rav, imagine that instead of the three of us discussing this issue, there were another three who were judging the appropriateness of drafting girls into military service. Instead of the Bostoner Rav, there was your zeyde, Reb Chaim. Instead of the Radiner Rosh Yeshiva, there was your father-in-law, the Chafetz Chaim. Instead of me, there was my father-in-law, Rav Iser Zalman Meltzer. Bostoner Rav, what would your zeyde have said? This masterstroke did not result in a shift in Rav Soloveitchik’s position. He got up and said that he had to leave, “Kletsker Rosh Yeshiva and Radiner Rosh Yeshiva, a gutten tag” and left.
in 1954 or 1955, Rav Aharon reached out again to him and enlisted him in efforts to raise funds for Chinuch Atzmai. The high point came at the first Chinuch Atzmai dinner where Rav Soloveitchik made the most remarkable speech I have ever heard. After explaining why though he is a Mizrachist he is helping Chinuch Atzmai, Rav Soloveitchik spoke warmly about Stephen Klein, Chinuch Atzmai’s chairman and the president of Barton’s Candy. He then lavished praise on Rav Aharon, comparing him in elaborate language, first to the Vilna Gaon, then to Rav Akiva Eger and finally to his zeide, Rav Chaim. I was standing directly behind Rav Aharon as Rav Soloveitchik spoke and as each of these comparisons were made, Rav Aharon tugged at Rav Soloveitchik’s jacket with one hand and implored him to stop and with the other hand he pounded on the table and intoned repeatedly, “Das iz nisht emes, das iz nisht emes.” As I looked more closely at Rav Aharon, I saw that he was crying.