I like the idea of chunking! I like doing a lot of things throught the day, but I didn't think about that as a learning/teaching strategy for students. It makes sense. The guidance of videos being 10-15 minutes long is a good guide, although my limit is about 2 minutes. There is a tool that allows the instructor to insert questions that have to be answered throughout the video. I would recommend doing something like that for videos to keep the students' interest and to help them be more attentive.
