I'd need some examples to get what you mean here. My experiences, both personal and simply observed, is that you can you can roughly split both conservatives and liberals into two sub-groups, although the distinction on the liberal side is a lot more fuzzy.

There's the emotive/moralizing side that fight based on what they feel rather than any concrete justification. What's right is decided simply by an assumption of how the world should work, either collaboratively or selfishly looking out for yourself only.

Then there are the logical logical arguments. On the conservative side these end up being a lot more in the form of 'I am right, you need to prove otherwise' while liberals (myself guilty of it as well) will go through these elaborate deliberations backing one point with another and somehow hoping to convince these people who have already decided they're right of their error.

If you've ever tried beating your head into a brick wall you might recognize the feeling that last one, but it's hardly an obstruction to dialogue, just a frustration of trying to engage rationally with largely irrational beings.