Does your heart beat simultaneously when using the stethoscope as when you took it using your 2 fingers?

Yes, your heart beats simultaneously regardless of how you measure it, whether with a stethoscope or by feeling it with your fingers. Both methods detect the same physiological heartbeat, as they are simply different ways of monitoring the heart's rhythm and rate. The stethoscope amplifies the sound of the heartbeat, while your fingers sense the pulse through the arteries.