question #1 Sahih al-Bukhari 1209, Book 21, Hadith 13 : What does this narration indicate about the interaction between the Prophet (ﷺ) and his family during prayer?

I used to stretch my legs towards the Qibla of the Prophet (ﷺ) while he was praying; whenever he
prostrated he touched me, and I would withdraw my legs, and whenever he stood up, I would restretch
my legs.