Firstly, Yasher Koach and thanks so much for all your hard work. I receive tremendous benefit from your web site, in both understanding pshat as well as engaging my memory on a more active level by working on the questions.

On the answer to question 7d, it says "They did not see each other for forty years." Rabbeinu Chananel reads the Gemara as Rav Huna said that Rav Chisda needs Rav Huna for 40 years, i.e., the 40 years mentioned in the Gemara goes with the statement before it about Rav Chisda needing Rav Huna, rather than with the statement made after that they did not see each other. Is there another perush that interprets the Gemara differently as the Review Answer states?

Jacob Gur, Baltimore, Maryland, USA