BTN is so passive that he's only repping a narrow range here imo. This is the widest I gave him at the time and I doubt he even raises TT-JJ into a pot sized lead from UTG:

Board: 6s 7s 9h
Dead:

equity win tie pots won pots tied
Hand 0: 43.193% 42.60% 00.59% 11810 163.00 { As9s }
Hand 1: 56.807% 56.22% 00.59% 15584 163.00 { JJ-99, 77-66, T8s, 97s, 76s }


I assumed UTG would fold despite the strong lead if I jam.