QuiltingHaven

My niece asked that I make a table runner with her father-in-law's high school and college. She wants both of them on one runner. Well, I have completed the two 14" x 60" runners. Now, is it possible for me to put batting and put a very thin cloth on the back of each of them and then sew them together back to back to make one runner? I planned to use warm and natural and a thin white cotton on each and machine quilt each of them. And then sew them together and bind them. Does this seem possible? Here are the two toppers and I tried to make them exactly in size, sashing, and squares so that they are exactly the same. Here are the two.....please give me your best help you can.