I’m confused here. Elu v’elu is only a system by halachic disputes. If you and I disagree about kashrus issues, we will have a whole set up on how and when we can eat the others food. And everything is fine. We’ll still daven and learn together. But if you make a change in curriculum or decorum I’m going to be pulled along unless I make a strong stand not to follow your lead. And if you would change the nusach hatefilah, I would have to leave your shul or my descendants would end up davening as you do.
My understanding is, that as long as we see each other as comitted to halachah we would not schism. You agree?
Do you consider the separate orthodox circles to be a schism? I don’t.