Joseph,
“Rav Aharon Kotler was certainly no misnagid.
He was certainly a novel change from the old style
.He told a relative who asked him if it was permitted (in 1946) to marry someone from a chassidish background,that the cherem today is battul
On the other hand when the satmar rav told someone “you’ll never be a chussid”He told the bachur “say Amen”