I have a modem/router combo that was provided by my ISP and I recently bought powerline adapters since that modem/router is on the third floor and I'm going to move this second router I have down to the first floor. I know that I can set the second router into AP mode, but the problem with that is, I heard that even if I set the AP's SSID and password the same as my first modem/router's SSID and password, that laptops and other mobile devices will switch between the networks when the signal gets low, but also on the first floor I have a wireless printer, and I would like to print to it with my desktop which is on the third floor, and I heard that since it is technically two separate networks, it won't detect my printer. Is this true?