hi! could you help me figure this out in after effects (audio spectrum + deep glow)?

i created an Audio Spectrum layer for Side A and it looks fine. then i duplicated that same layer, adjusted it for Side B, and noticed that the Side B spectrum is compositing on top of the first one. in the overlap area it darkens / ruins the Side A spectrum, as if the second layer is “covering” the first, even though Deep Glow is set to Screen.

could you explain why this happens and what the correct workflow is so that two Audio Spectrum + Deep Glow layers don’t affect each other when they overlap?

i already tried doing it via pre-comp and via Set Matte, but it didn’t fix the issue.