There is no dongle, it’s wireless CarPlay.
it is ok if listen to a radio station and then turn the car off and when you comeback to the car it goes automatically to the radio you was last listening to, but if you listen to your music on Apple CarPlay and turn the car off when you comeback to it the music carries on playing from the last time it was on but instead of going on to the album artwork it goes automatically to the Satnav.