Which comparison accurately reflects the disagreement over anna in “al-Zuhrī told me that Saʿīd said ...”?

Muʿanʿan Transmission: Possible Meeting, Evidence of Hearing, and Continuity

• The majority accepts anna as connected even where disconnection is proven
• Aḥmad, Yaʿqūb ibn Shaybah and al-Bardījī reject every use of ʿan outright
• The majority treats anna like ʿan subject to prior conditions; Aḥmad, Yaʿqūb ibn Shaybah and al-Bardījī disagree with automatic equivalence
• Al-Nawawī requires the literal term samiʿtu in every individual anna report