Answer:
When the first box is full of text it will automatically go to the second box.
Step-by-step explanation:
A text box is rectangular frame in which you can enter text. If you have two text boxes and you link them, the text will flow from one text box to the other. So, according to that, the answer is that if you link two text boxes when the first box is full of text, it will automatically go to the second box.