Maybe it’s a combination of a new offensive coordinator and more experience. And you can still take this with a grain of salt. But Tennessee football appears to show signs early on of having a much better offense than they did last year.
Now, the next level for the Vols offense is simply being competent after being out of the top 100 offensively and having one of the historically worst offensive lines in history in 2018. However, any improvement is good improvement, some of the quotes from the coaches and observations from people covering practice show that it is indeed happening.