drift into conversation

Book went off somewhere and Gordon drifted into conversation with a visiting particle physicist, Steingruber.

As we slid our toes in and out of the sand under the table, we drifted into conversation about Shu-Ming's work.

Evenings full of wine rich in body, and food that just can't be ignored, inevitably drift into conversations that solve the world's problems, and tomorrow the sun will shine again and it's time to shake a leg and enjoy another day.