Using several denoise tools lightly can make more sense than pushing one tool aggressively, because the modules target different kinds of noise and artifacts.

From the community answers:

• raw denoise is mainly for chroma/color noise and is fast.
• denoise (non-local means) works on luminance and chroma noise.
• denoise (bilateral filter) works per RGB channel.
• equalizer can also be used for denoising and sharpening by frequency range.

A practical Darktable workflow is:

1. Start with raw denoise to reduce color speckling.
2. Add a gentler luminance denoise step with denoise or equalizer.
3. If needed, reduce module opacity/blending to bring back detail instead of increasing denoise strength too far.
4. You can split work by channel, for example using equalizer on L for sharpening/detail and on AB for color denoise.

In general, avoid one aggressive pass if it creates obvious blur or waxy textures. Better results often come from removing color noise first, then applying modest luminance denoise, and fine-tuning with blending/opacity.