Which two Aḥmads are discussed for an unqualified narrator from Ibn Wahb in al-Bukhārī?

Muttafiq-Muftariq, Muhmal, Narrator Denial, and Musalsal

• Aḥmad ibn Ḥanbal and Aḥmad ibn Yūnus
• Aḥmad ibn Ṣāliḥ and Aḥmad ibn ʿĪsā
• Aḥmad ibn Ḥanbal and Aḥmad ibn Shuʿayb
• Aḥmad ibn Muḥammad and Aḥmad ibn ʿUmar