I've tested this with three different people. When connected to bluetooth or headphones, and asking siri to read messages, she would always ask if you wanted to reply (and a couple other options). This was convenient when in the car or if the phone is in my pocket while walking as I did not need to look or touch the phone again after the initial contact. I could receive and reply to a message with only activating it once. In the past week I've noticed strange behavior when reading a message. A few times she said "that is all" after reading them. Now she says nothing and does not ask what I want to do after reading. Has anyone else noticed this or know about why this change happened?