Can anyone explain how this works.

Jump in my car in the morning and load up a podcast to listen to on the journey (connected by old fashioned bluetooth, not Carplay in case that matters). Spend the day in the office and at some point in a boring meeting I close all background apps including the podcast app. I know I shouldn't close background apps these days but its an old habit that's hard to kill.

Jump back in my car at the end of the day and the podcast just starts playing, picking up exactly where I left of in the morning. When I get home in the evening I check my background apps and the podcast app is not running in the background.

How does it know to play the podcast when the app isn't running? Is this some king of black magic going on?