They do not turn off in your pocket. I leave my case at home most days as it’s too big for my pant pocket. When i take them out of my ears and place into my shirt pocket i notice the headphones icon on my phone screen which means they are connected and the battery is running down. I can’t figure out how to turn them off so i lay them on ny desk at work. However i do forget to take with me when i leave for day at least once a week.
So unless they are in the hard case you can’t guarantee they will stay in sleep mode. If anyone has a suggestion, I’m all ears.