OK, I am still trying to sort this all out, so bear with me!
My original observation was that two hives that were otherwise identical (install date and method, condition, geography, etc.) were showing two differing behaviors. In fact, this remains the case even though the additional super was added a couple days ago. I will check later today and post any updates in hive #2 behavior.
As for feeding the last of the syrup, this does not strike me as odd. If the choice is to complete the feeding or dump it out, I will complete the feeding. My goal this year is to end the season with three strong hives with a lot of comb and brood for next year. I am a hobby producer, not a commerical producer, so I don't see anything misleading about using sugar water to get them started.
This is a great conversation and I am learning a lot. Thanks!