What is the key Hanafi–Shafiʿi difference on an adult woman concluding marriage?

Legal Implications of Khāṣṣ and the Two Kinds of ʿĀmm

• Both assign the guardian the same role in every case
• Hanafi recognition subject to detail; Shafiʿi guardianship requirement
• Hanafi law always treats it as void
• Shafiʿi law removes all conditions