It's not solely about 'time value'. I have an inherent dislike for reiteration and meandering, which is easy to skip in written works by scanning ahead. But with podcasts I have to do a skip-dance without cues.

On the contrary I've found that listening to air traffic control recordings is relaxing and helps with task-concentration because it follows strict procedures and no-one wastes time blethering. It's like a verbal metronome. You really have to make your own if you want high quality, though, since LiveATC is an earsore.