Once you go outside the client/access-point model, you are no longer "wifi". Some phones allow you to have wifi hotspot on at the same time as being connected to a wifi accesspoint, but this is only because it has two separate radios. BLE has a connectionless mode, and it has a mesh mode, built into the stack. They are in the BLE protocol. Wifi-mesh isn't something a phone can do unless it has a radio in accesspoint mode. With BLE, mesh doesent require a special radio.