Comment by sinuhe69

One negative side-effect of the same SSID policy is you might not be able to share your WiFi password by simply putting your devices close to each other. Ordinarily, Apple devices can share WiFi password easily by putting an already set up device close to a new one. But if they are momentarily connected to different networks (frequencies), even though they have the same SSID and same password, Apple software will see them (correctly) as on two different networks so the password will not be shared even when the password is the same on both networks. I don’t know if the automatic band switching is any better than the manual one but I find this issue is quite a hassle.