Most of what we say is idle chatter that comes easily to us.
We can gossip away until the cows return for milking. It is noise to avoid silence with the added benefit of keeping our egos close instead of running away on errands of their own.
Thinking is hard.
It takes effort and it takes time. There are awkward pauses when someone is thinking that any listeners feel obliged to fill with inane noise.
Try to listen well.
Banish your instinct to fill the quiet for all that is happening is another is waiting for the cows.