TA and Borax both act as a pH buffer, meaning they will both slow down changes in pH, which can be good. However if TA gets too high (~>100) you will see you pH rise gradually over time and pretty fast if aerating.
In my case, water that I add from the hose is very high TA so I am always fighting it with acid as the pH keeps creeping up. You can 'kill' TA per the pool school method or raise it with baking soda. So a low pH AND low TA condition can be fixed with baking soda and aeration. But low pH/high TA can be fixed by simply aerating.
Borax is an additive that will give you great feeling water and even more pH buffer. So if you need to get your pH up anyway, it's a win/win to use borax to raise it. The only caution there is, anything you need to do to the pool that involves lowering the pH (slam, reduce TA for instance) will take more acid once you have borax in the pool.
I don't know how to link to the other posts I've referenced with this app. I'll try to get them in on a proper computer.