Did Imaam Bukhari record incidents (which he witnessed) in addition to narrations?

I was just curious to list down the narrators of Ahadith. While scraping through some hadith sites (programmatically), I found the following hadith which had no narrator. > **Sahih Al-Bukhari Volume 9, Book 84, Hadith 72: ** >Abu 'Abdur-Rahman and Hibban bin 'Atiyya had a dispute. Abu 'Abdur-Rahman said to Hibban, "You know what made your companions (i.e. Ali) dare to shed blood." Hibban said, "Come on! What is that?" 'Abdur-Rahman said, "Something I heard him saying." **. . . ** ######**click here for full hadith** The hadith looks like a conversation between **Abu 'Abdur-Rahman** and **Hibban bin 'Atiyya** which Imaam Bukhari (Rahimullah) might have witnessed and recorded, against most other ahadith that are narrated by someone. - Did **Imaam Bukhari** (Rahimullah) record incidents in addition to narrations? - Are there more ahadith of this format recorded by **Imaam Bukhari** (Rahimullah) and other Muhadditheen like **Imaam Muslim** (Rahimullah), **Abu Dawood** (Rahimullah), etc.? ##جزاك اللهُ‎