4th Gigabit Modem; 2 Home Networks (300, 1000)...

Due to electrical issues, I am on my 4th comcast gigabit modem.  And, I NOW have TWO Home Networks (300, 1000). I can connect to one or both at the same time; and, it makes no difference; my hardwired download speed is 115. 

Also, in my connected devices list, my laptop is listed twice.

Has anyone else seen this?