QI works best for very advanced learners who can follow fast and complex English. Some conversations move quickly, so learners may need to listen to certain parts more than once at first. Learners will hear plenty of useful natural English, but some lines may still require a second listen. The complexity of the plot makes listening more challenging because learners also need to keep track of what is happening. If your English is near C1/C2, this can be useful practice, especially if you start with English subtitles.
