Default, the Partner Mic program is set at -6 dB for your HA Mic volume anyway.
It can be set to a max of -10 dB by the audiologist.
Also if you have the NoiseBlock set to 0 on the Partner Mic program as the NoiseBlock also reduces the loudness of the speech coming through the Partner Mic.
I find it harder to hear the Partner Mic even with NoiseBlock set at weak and then I do without any NoiseBlock what so ever.
Having no NoiseBlock increases the loudness of the speech by quite a lot.
Obviously not really loud as it won’t increase past what your gain is set on your hearing aids. It’s just that the NoiseBlock makes speech really quiet.
It’s the same with the TV Connector, Phone Call and Music program. NoiseBlock interferes with speech massively when you stream music but when you are using your HA Mics, so the everyday program, then NoiseBlock is good.