I cannot say how many time I've had to debunk the myth of multitasking. Here's a good breakdown for all crowds.
https://goodmenproject.com/guy-talk/smart-people-dont-multitask-fiff/
@arteteco
This holds true for your example of walking and listening to a podcast. Walking is largely passive so you're free to redirect your attention to the podcast. However, if you trip or stop at a crossing, your attention shifts away from the podcast and to managing your fall or negotiating the crossing before switching back. In this those moments you've lost attention to and recollection of what is being said in the podcast.