Yochanan's response ("But, but, I brought you under the wings of the Shekhinah!") is totally a lamer answer.

The lecturer did mention that [that the line may have been added by a later editor], although we weren't aware of that when we were doing the text-study. I do think that is interesting. Thanks. I was in fact glad to hear this line might not belong. Every other line in the exchange was so sharp and crackling, this one didn't live up to them.

Whether or not it was original-text, it is LAME. Yochanan so lost if that's the best he could do. :-)