Part of the acting in good faith is indeed assuming that your partner is also acting in good faith.
Not if you define the terms the way the OP defined them. If you see acting in good faith as being focused on learning what’s true, falsely assuming that your partner is acting in good faith is a hindrance.
Not if you define the terms the way the OP defined them. If you see acting in good faith as being focused on learning what’s true, falsely assuming that your partner is acting in good faith is a hindrance.