Act as an expert video analyst and educational assistant. 
I am sharing a YouTube video link: [यहाँ अपना YouTube वीडियो लिंक डालें]

Your task is to analyze this video and find all the exact timestamps (in MM:SS or HH:MM:SS format) where:
1. A new question, MCQ, theorem, or important concept appears on the board/screen.
2. The teacher is either aside, minimized, or has given students time to read/try the question, ensuring the board/questions are clearly visible with minimal or zero human obstruction.

Please output the result in two parts:
Part 1: A brief description of each timestamp (e.g., "01:59 - First statistics question").
Part 2: ONLY a clean, comma-separated list of just the timestamps at the end (e.g., 01:59, 06:53, 10:05, 19:07) so I can directly copy-paste them into my custom tool.