While it's true that you're going to Shutdown, no matter if you are TRT or on a regular Cycle, you will still start at your Natty Level.
So if you're higher Natty, you will test Higher after being On-cycle or TRT.
If not, again, there would be No Need for a Reference Range for Total Test, and your Doctor wouldn't need to do any Bloodwork.
Cause X amount of Mgs., would yield x amount of Total Test.
No doubt the believe a logical sense of reason can be derived from illogical processes will always confound and perplex those with rational thought.
In fact for many this inner "conflict" often manifests itself on forums as a desire to be recognized and lends credence to the colloquialism; "common sense is not so common".