And thus why I specifically mentioned; "I personally wouldn't be at all surprised to find all onboard antennas to share a common pickup point then process different type signals at differing locations." When/if a pickup point is determined we can then see if a more free-flowing and less obstructive path might be possible. I just don't see multiple single-point pickups being used at each of the three openings in the Devialet for separate receivers. What I'm more likely to believe is a single pickup point entry with a two-lead or more antenna array.
Statements in my posts are opinion only, not to be construed as fact. Any projects I engage in are at my own risk! Their outcome cannot be assured and may result in success, small/no change or catastrophic failure. I encourage no one rely on anything I say or do as gospel and to realize your mileage may vary!