Diffing Two Podcast Audio Voices

Howdy, I recently recorded a podcast with two people and two microphones. I tried my best to isolate them as much as possible but each microphone still picked up the other person a tiny bit. This leads to an echo when I mix the two tracks together. Is there anyway to extract the difference between the tracks or reconcile this episode in any way? I know people record with multiple microphones, so there has to be a way but I'm a total noob when it comes to this stuff.

Cheers