Separating and removing competing vocals from a sound track

I have a sound track which contains competing vocals. The competing track is deliberate interference with the desired track so there is lots of overlap. Is it possible to use Audacity to separate these vocal tracks an remove the undesired track? I have limited experience using Audacity. I have used it before to remove pops and clicks from vinyl music tracks.

Audacity can’t be used to split a mixed show into individual voices.

Koz

Thank you.