Can I auto-edit 2 Dialogues? (Interview)

Hey everyone !

So, I've been asked to edit a interview with 2 participators.

The 2 audio tracks are clean in term of quality (1 mic per participator), but beacause the 2 micros/participators were not far enough, and even the audio tracks being fully syncro, we can hear a kind of "echo".

So I have to manually edit / cut the audio of each tracks whenever one of the spectateur doesn't speak, in order to have the best global results.

I could eventually set up a filter (such as lowering the volume of each track when the db is lower than...) but I'd like to avoir this solution for multiple reasons.

Is there a solution (PP/Audition/Plugin) that would compare boths tracks and auto-edit ? 

Thank you guys, that'd be a time savior !