So I'm setting up a new Roku streaming stick which at the other end of my house from my TP-Link C9 Rev 1 wireless router. The Roku stick install window for wireless networks shows signal strength for each alternative. I was surprised that the Guest network had a stronger signal than the regular network. I thought that trhe regular network and the Guest network used the same 2.4 network, and the split was entirely in the router's software. No?