Toruneo Custom Radio antenna still necessary?

Moin out there, I’ve been standing my Tourneo Custom on the yard for a week (Yeah!). It’s a Titanium in white. One of the first actions was first thoroughly crawling through the car and looking at it. I found out that the second row of seats has loudspeakers in the ceiling, of which I didn’t read anything before and also in the demonstration bells and the used ones at the dealer was just heaven. OK, the things aren’t there and see also et I have to say that I only have the radio 5 (the standard CD radio with DAB added) in the background. In the third row there seems to be an additional, separate tweeter. Or were they always there? Then I noticed that I probably have the steamed-up antennas in the rear side windows (I thought it was a disc heater first and wondered about the stupid placement and design). I have to say that I only have the radio 5 (the standard CD radio with DAB added). his ominous copper tracks on the glass, I have unscrewed the antenna on the roof and drive for days only with the empty antenna foot on the roof. As for the reception I could not find any problems. I wonder if this antenna is wired at all and why they grow then at all (just to seal the hole?). If so, this might be quite an improvement of the antenna problem in connection with underground garages. And the additional Loudspeakers should also be more harmful to the sound in the car (but I’m not really so audiophile-oriented) Greeting Thomas