My information regarding the position of Rav Soloveitchik z’tz’l came from my own rav, who earned semichah from The Rav in the 1960s.
My information regarding the position of Rabbi Yosef Eliyahu Henkin z’tz’l is from a response by Rabbi Yehuda Herzl Henkin to a comment I had posted on another internet forum.
I stand by my statement.