Apologies for my tardy response. IMHO, you don't have to know whether you are on one or the other networks. The 802.11x protocols all have features that let them choose the strongest signal on the same SSID. network. I take care to "arrange" the channels so they don't all broadcast on the same channel id and thus conflict with one another. Some mobile devices that can't handle moving from one to the other experience a "drop" when they transition from one transmitter to the other. For the most part it's seamless. Things like ROKU that are stationary will not experience any issues.
Here are some screenshots from a Wifi Analysis tool on my mobile phone that shows the two networks with the same SSID - one image is of the 2.4 GHz signal, and the other (which, as I took it, I realized are overlapping), are of the 5.0 GHz signal. - I guess I'm going to have to pull out the old toolbox and tell one of those 5 GHz signals to scoot over to some other frequency.