+----------+
                  |          |
                  |  modem   |
                  |          |
         +--------+----------+
         |
         |
         |
+--------v----------+        +-------------------+
|                   |        |                   |
|  xfintiy router   +-------->  personal router  |
|                   |        |                   |
+-------------------+        +-------------------+

+----------+
                  |          |
                  |  modem   +---------+
                  |          |         |
                  -----------+         |
                                       |
                                       |
                                       |
+-------------------+        +---------v---------+
|                   |        |                   |
|  xfintiy router   <--------+  personal router  |
|                   |        |                   |
+-------------------+        +-------------------+