Appl cash transactions

If i am using apple cash and it is associated with the same bank account that my parents use, will they see my apple cash transactions on their phones as well since the bank account i am withdrawing cash from is the same bank account they use? Or do apple cash transactions only show up on the device it is set up on? They use apple pay and the bank accounts linked to their cards is the same one i use, so i wonder if they will see what i purchase. They do not have apple cash set up though and we have different apple ID’s.