Conversations flow better when they aren’t the primary value two people are providing to each other.
If you’re just sitting on a couch talking to someone else, talking is the primary value you’re giving each other.
But if you’re driving somewhere, or jogging together, or playing putt putt, or just walking, then talking is secondary. It takes the pressure off. Small talk is less mandatory. Silences are less awkward.
Some of the best conversations I’ve had have been when the conversation was secondary to whatever we were doing.