Person A: What is the meaning of "bump into someone"?
- Person B: If I met your brother somewhere unexpectedly, I would say, "I bumped into him yesterday."
Here I'm only interested in sentence (1).
Is this a valid second conditional where the sentence in quotes uses "real" past tense (bumped into), with yesterday referring to the time of meeting? (Both "met" and "would" are unreal)
Or
Does the condition clause of (1) assume a real past situation where the speaker met your brother, and the result clause talks about a present or future unreal time? ("met" and the sentence in quotes are real, but "would" is unreal)
Something like: Assuming yesterday I met your brother somewhere unexpectedly, I would say, "I bumped into him (yesterday)."