Aren't opentuition's F6 UK video lectures unnecessarily lengthy ?

Hi , I am finding it hard to concentrate for the entire period while the intro is given to the chapters, they seem to be too lengthy, also not solving the examples doesn’t help either. What other students have to say about it, please share your views, how to use the lectures efficiently and how to prepare for F6 UK. I apologize to the tutor, I don’t intend any disrespect, I am simply trying to understand whether other students are also finding it the same way.