21.   We talked for hours about the good old days.

22.   Bob cut out right after the movie, but the rest of us had coffee and talked for a while.

23.   We had been talking for a good half hour.

24.   They talked for a bit.

25.   He is a wonderful companion and we can talk for hours on end.

26.   We talked for hours and hours.

27.   He talked for two hours without pausing for breath.

28.   Are you busy?

29.   A science-fiction maven who could talk for hours about fictional technology.

30.   He talked for over an hour without pausing.