double voice recorded

Hi everybody,

i have this problem: i recorded an interview using a video chat but my guest voice has been recorded by my system audio first and then captured by my microphone and recorded over again. The effect is such as when you watch somebody talking and the translator over 1 second delayed. Does it exist a way to reduce the volume of one of the two or to cut it?
Thank you very much

So you’ll be using headphones next time, right?
If both voices are on the same track, I don’t know of any way to rescue this show.