Manual Enhancement of Two Voices

I have a two-minute casual conversation captured on a single track with three speakers. Speaker A sits well in the mix, but the passages from Speaker B and Speaker C are buried. I need both their volume and clarity brought up to match Speaker A, while keeping the tone natural and free of artifacts. Please run a gentle broadband noise reduction across the entire recording to tame the room hiss, yet preserve the ambience so it still feels authentic. Because this is a sensitive personal matter, avoid any AI-based speech reconstruction or voice cloning; rely solely on traditional audio-engineering techniques such as EQ, multiband compression, spectral repair, and manual gain riding. Deliverables • One cleaned stereo WAV (or AIFF) at the original sample rate/bit depth • A concise note describing the processing chain and key settings applied Keep every other element untouched, and return the finished file within 48 hours. Confidentiality is essential—delete any working copies once the project is handed over.