I have an experiment for you. If you listen to podcasts regularly while doing other stuff, pull one up that you've listened to in the past 3-5 days and listen to it again. When I do this, I will periodically get a stream of vivid movies of what I was doing when I listened to it the first time. I'm talking an intrusive replay of the sensory experience I was having previously.
My next step is to fire up a dash cam and listen to podcasts while I'm driving, then re-listen a few days later and record myself describing what I see as I'm listening. Then sync the two videos and see how close my description is describing what I saw the first time.