أَأَضَاعَ الْأَمِينُ الْمَخْطُوطَاتِ؟ لَا، مَا أَضَاعَهَا.
Did the custodian lose the manuscripts? No, he did not lose them.
The answer follows its question directly; it is not another independent report simply because the two sentences share a topic. Their response relation explains faṣl without an additional coordinating wāw.
A subsequent distinct statement might be linked by wāw if the discourse relation warrants it. One must identify precisely which adjacent clauses are being compared rather than treating all links in a paragraph as identical.