I practice what could be called "speed listening" -- listening to audiobooks and podcasts (and watching videos) at 2x to 3x speed.
It saves a lot of time, and I only wish I'd started sooner.
It saves a lot of time, and I only wish I'd started sooner.
I often start with 1.5x and go up to 2x or 3x after a few minutes.
It's extremely important for online courses that would normally take weeks to watch and it starts feeling normal so quickly. When I go back to 1x it feels like people talk in slow-motion.
But I think quizzes are important in that context, otherwise the new knowledge won't solidify.
I'm always impressed of how much of my duolingo Spanish skills are still present, even if I didn't use the app for half a year or read any Spanish in that time.
So, if you are a native speaker or you are fluent in the language, listening at a higher pace shouldn't be an issue.