Is it true that Imam Abu Hanifa al-Nu'man was a student of Imam al-Ja'fari, and if so, why did he follow the Sunni madhhab, and why did Imam al-Hanafi not adopt the approach of Imam al-Ja'fari?

Historians have mentioned that Abu Hanifa learned from Ja'far al-Sadiq. Abu Hanifa narrated from him and heard from him, and the author of Al-Mishkat mentioned this, which falls under the category of narration by peers. The methodology of Abu Hanifa and Ja'far al-Sadiq is one and the same: it is the sound methodology left by the Messenger of Allah, peace and blessings be upon him, and carried on by his Companions. This is the methodology of Ahl al-Sunnah wal-Jama'ah. Ja'far is innocent of what was innovated after him and attributed to him by the deviant sect.