Not unusual at all. They have to get all the information before they can commit equipment and manpower.
Many years ago...My father shot my brother, he shot me, and he shot himself. I survived. Called for emergency while I bled all over the phone and had to play 20 questions with the incredible bitch. When the ambulance got there, the driver held up for what seemed like forever demanding to know who was going to be responsible for the bill.
Been there.