With carlinkit 4.0 installed, wireless CarPlay works like any other official solution. You get in the vehicle, as soon as it boots up, your phone will automatically connect to your infotainment system.
A new loading screen appears for a few moments as your phone connects. This is the one difference between this solution and an official solution.
Wireless CarPlay brings several benefits. It leaves you free to keep the phone in your pocket or purse. Fiddly wires become a thing of the past.