Is this sentence correct:
He was mumbling incoherently. If you understood Sanskrit I understood what he said.
Or should it be:
He was mumbling incoherently. If you understand Sanskrit I understood what he said.
Or are they both correct.
I should clarify the context because this can be understood in different ways. The example is about person A narrating a past event to person B. The narrator A is trying to accentuate and emphasize the fact the he understood absolutely nothing of what the person in the past story was saying. So the desired meaning is: Just like S1 is utterly wrong, thus is S2: Just like you understand absolutely no Sanskrit, I also did not understand what the person in the story was saying. Of course there's no logical link between S1 and S2 like in normal conditionals, so S1 is not a condition for S2 in any way.