Scrubbing through audio while recording

Hey, I recognize that logistically this doesn't make a lot of sense, but is there a way to scrub through what you've already recorded in multitrack without stopping the record? For example, my wife and I do a podcast, sometimes I want to scrub back and listen to something we said 15 minutes earlier, but if I stop the record to go back, I end up with a whole new file which can get tedious. Just wondering if I'm missing something or if this is a crazy thing to ask for. Thanks!