I'm wondering if there's a significant difference between the sentences below.
(a lecturer to students):
(1) Last time we talked about the French revolution.
(2) Last time we were talking about the French revolution.
Does (2) imply a longer and a more active process when compared to (1)? Would a native speaker use either (depending on what they wanted to emphasize)?
I think I'm more likely to say "We talked about."
If the class ended before the discussion was completed, I would say "We were talking about."
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.