Ah, you're only guessing, how surprising.
The fact is that the transcriptions don't say nothing about 10 years and the fact is that the question was totally clear, it didn't said any timeframe.
I would also say your guessing yourself. You weren't at the trial, you didn't see how the jurors were screened, what instructions were presented or when in the process that actually started recording these transcripts. As you said it yourself, this was pre-trial. Its not conducted in the same manner as a regular trial.