if titans lose to KC and Houston beats JAX this weekend you get into a pickle, assuming both win week 16 vs JAX and Cincy then even with a Titans win over Houston in Week 17, they'd have the same H2H record and Houston would win divison with better record vs the AFC (7-5) compared to Titans (6-6)
So you need either Titans to beat KC or Cincy to beat Houston AND Titans to beat Houston (who already beat them once this year) in last week of season
......maybe hedge a little on Houston isn't a bad idea