This is a dang Gary Danielson talking point.
As with many things Gary says, it's kind of meaningless once you think about it.
The team that's behind at halftime is less likely to win the game than the team leading? Shocking.
There is research that shows the team leading at the start of the final period (4th qtr in football and basketball, 3rd period in hockey) is 80% likely to win the game.* Couldn't find any research about halftime leads, but it is probably also a very significant advantage.
Perhaps if we throw out the obvious mis-matches (remember how anemic our roster was in '21 after Grey, To'o To'o and 33 others jumped ship?), like '21 Bama, '21 UGa, '21 Florida, and '22 UGa, our loss rate after trailing at the half is probably just about like every other team.
So...it's a pretty big nothing burger. It basically says, we didn't come back against Pitt, Ole Miss, or Purdue in '21 like we could've.
Shocking.
Go Vols!
* These researchers focused on pro sports; one may reasonably assume their findings are pretty valid for college as well: Paramjit S. Gilla, "Late-Game Reversals in Professional Basketball, Football, and Hockey", The American Statistician, Vol. 54, No. 2 (May, 2000)