If you’re hearing an echo during a Live interview, either your microphone level is too high or the interviewing candidate’s speaker level is too high. This means your microphone may be picking up the audio from your speakers or the interviewing candidate's microphone may be picking up the audio from their speakers.
To resolve this issue, adjust your microphone and speaker settings. Try lowering your microphone volume first. If that doesn’t resolve the issue try using a headset or headphones with a microphone.