Sure, nothing different other than the Titans being 2-4 at the time, them averaging almost sixty fewer passing yards per game, 70% completions vs 59% with Mariota, 29 PPG scoring with Tannehill vs 16 PPG scoring with Mariota... yeah, that's nothing.
AJ Brown
With Tannehill: 778 yards (78 yards per game), 20.4 yards per reception, 62% catch rate on almost twice as many targets, 6 TD’s (.6 per game)
With Mariota: 273 yards (46 yards per game), 19.5 yards per reception, 60% catch rate on half as many targets, 2 TD’s (.3 per game)
I don't know why they switched QB's at all?