Hey GymRat, i think your putting to much emphasis on squats and DL boosting test. It does boost test, but to my knowledge its very temporary because you body thinks its getting into a fight while you do something as intense as squats or DL so it releases test to help you through the traumatic experience!
Maybe like how some people squat heavy weight for 6 reps before sprinting. It helps out their sprint time. Maybe if you did something like that on Chest day, but i dunno. I dont think the test boost from squats is that significant. I think its an old wives-tale from coaches to convince their athletes to squat! But I could be wrong about this one!