Here's my connection: The last teaching in Moed Katan is how Talmidei Chachamim do not have rest, even in Olam Haba. Their portion in Gan Eden is constant "Chidush" -- "newness," to continuosly be enthralled as they reach higher and higher levels of closeness with Hash-m. They are similar in this regard to the context of the first teaching in Moed Katan regarding a Beis Hashalchin, which is a field that needs constant watering in order to produce. Just as a Beis Hashalchin is always watered and growing even on Chol HaMoed, so too Talmidei Chachamim will constantly gain and grow even in Olam Haba. [There is more to expound on along these lines, but I'll leave that up to you.]

All the best,

Yaakov Montrose