The integration you spoke of is a post-war phenomenon.
Pre-war or post-war, the fact that they are integrated and all proves there is no cherem, otherwise they couldn’t integrate. Additionally, the integration is way pre-war. Just look at the Gerrer Rebbe and the Chofetz Chaim and how close they were to each other. (Or the writings of the Chofetz Chaim praising the Chasidishe Rebbes.) And how the Litvish and Chasidish Gedolim were already integrated in Agudas Yisroel, for example, before the war. (Including with the Chofetz Chaim’s brochos.) And in fact such integration predated even the Chofetz Chaim.
Back to subject please?
Okay, now back to the original topic.