I'm currently using JIO Fiber with an Asus router connected as an Access Point. I have disabled all the APs on my JIO fiber dual band router still it is broadcasting hidden SSIDs on both 2.4 and 5Ghz band. Moreover, There are concurrent overlapping channels running on both bands, similar to what is seen on many mesh networking routers. In the below image, there are two overlapping hidden network on channel 1 @ 2.4 Ghz and same on channel 157 @ 5Ghz.