Seventh: Ha’drwat Imam Bukhari Rwahmatullahi Alaihi also describes-
“Ha’drwat Imam Bukhari Rwahmatullahi Alaihi used to perform Taraweeh in Jamaat with his student during the first hour of night and used to finish the Quran Shareef once in the process and used to perform Tahajjud prayer all by himself durin Sahree.” (Lumatul Masabih, Fahtul Bari-Mukaddima)
Therefore it is mere stupidity to to consider the two prayers as one when Ha’drwat Imam Bukhari Rwahmatullahi Alaihi himself used to consider them as separate.
Since Taraweeh and Tahajjud prayers are two separate prayers, (i don’t understand this line). Therefore if they were the same, it would not be required to provide separate chapters. This also proves that the two prayers are separate.