Any input into that 'system' (meaning Biden) is likely going to result in overload!
Have you noticed how everything they try to do to Trump to slow him down or trip him up, backfires on them?
They controlled every aspect of this debate, and they still couldn't make Trump look bad, nor present Biden in a positive / coherent light.
The lack of an audience didn't even phase Trump, but I bet poor ol' Joe was thrown off by it. They probably failed to take into account Trump's years of experience making television shows when they thought up that one.