There's an article on the financial site, seekingalpha.com, about the Windstream - Uniti lease and the current maneuvering by the various parties involved.
The reader comments at the bottom are worth skimming. Some of the commenters seem quite knowledgeable on bankruptcy law and are saying interesting things on Windstream vs. Uniti.
https://seekingalpha.com/news/3474954-uniti-responds-motion-filed-windstream-bankruptcy
They mention two terms I had to look up that are simple once you check Wikipedia:
Res judicata is the Latin term for "a matter [already] judged" -- used in reference to the ruling on the lease made in February by Judge Furman in the Aurelius suit.
https://en.wikipedia.org/wiki/Res_judicata
Collateral estoppel:
Similar idea
https://en.wikipedia.org/wiki/Collateral_estoppel