That's a good question. It's a common misconception that they're all linked. Generally, turning off auto start/stop only disables the engine shutting off at red lights or in traffic. It should not affect other mild hybrid functions like regenerative braking (which captures energy during deceleration) or any other energy-saving features the car might have. Those systems usually operate independently of the auto start/stop function. I suggest to double-check your owner's manual just to be absolutely sure how it works in your specific car model, as there might be slight variations between manufacturers.