A remote interview has small delays that people do not notice in the same room. Both speakers can start answering at once, then both stop. Editing can shorten an overlap, but it cannot always recover a sentence hidden under another voice.
Agree on one small signal
Before recording, decide how a guest can show that they want to add something. It may be a raised hand on the call or a short message in the room. Use a signal everyone can see without looking away from the microphone for long.
The host can leave a brief pause after a question. This gives the guest time to begin and reduces the temptation to fill every gap. During an answer, use fewer spoken acknowledgements if they repeatedly cover important words. Listening quietly does not need to look unfriendly; a nod can do the same job.
Repair an important overlap immediately
When two voices cover a key fact, pause and ask for that sentence again. Note the approximate time for the editor. A clear replacement is usually more useful than hoping a later effect will separate the words.
Do not repeat whole answers for every tiny overlap. Natural conversation includes small interruptions. Focus on names, numbers and conclusions that the listener needs to understand.
After a short practice exchange, listen back and decide whether the pauses feel comfortable. If the delay is severe, improve the connection or use shorter questions. Keep the guest's attention on the conversation rather than on a long set of production rules. One signal and one repair habit are usually enough to make the edit easier.