Show us the interfaces of selected AP. the important things here:
Wifi0 is in access mode, while wifi1 is in dual mode. Dual here means access and backhaul, access being the one for clients, and backhaul the one the AP's use to communicate between themselves. Here you see why numbers didn't match in the config's tricky part:
wifi0.1 –> SSID Wifette (2.4Ghz)
wifi0.2 –> SSID Picard (2.4Ghz)
wifi1.1 –> backhaul
wifi1.2 –> SSID Wifette (5Ghz)
wifi1.3 –> SSID Picard (5Ghz)
We can see all clients connected to the different SSID's of the current AP, in this case, there is one connected to wifi0.1 (thus on wifette in 2.4Ghz as we saw on the previous picture)
Here we can see that the AP's can see each other… in this case, Wifette-Hive AP3 can see 3 other access points, and they are part of the same hive.
In this case, we can see that 3 clients are connected to other access points of the hive. AP3 already has the information about these clients (thanks to the hive), and if client 3 get better signal from AP3 than from the one he is currently connected on, the device will switch from AP transparently.