cAP XL ac reflector and mounting

In cAP XL ac there clearly is a reflector. MT is not documenting the RF map of the cAP XL ac, we can only reverse engineer and guess, guess, guess …

To go from 2dBi to 6 dBi that is somewhat more than doubling. Or is it 2.5dBi to 5.5dBi, then it is just doubling (+3dBi).
Is the reflector causing the doubling or are the antenna doing it. (From a 2.5 dBi di-pole to a 5.5dBi antenna? and reflector as extra?)

From: https://fccid.io/TV7CPGI52XL

Are these di-pole antennas? Doubled the power in one half sphere by reflection? Then it should give something like a half-dipole-donut shaped spectrum
Klembord-3.jpg
Klembord-2.jpg
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Something like this ??? Ceiling mounted orientation (https://en.wikipedia.org/wiki/Dipole_antenna)
It would be nice to have the real spectrum.
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Klembord-4.jpg