Weaker link? I am not sure i follow you with that.

But as you mentioned flyes to failure that is exactly what you do....

Flyes to fail (aiming to fail between 8-12 reps) then follow straight after by bench for 4-6 reps.

If you were just to jump on a bench and bench to failure, the muscle group that is failing first is your triceps so your chest is not getting hit to its max. Whereas if you do flyes to failure then jump on a bench to fail again your chest is getting the benefit of going to complete failure without the triceps being the dictating factor.

By posting HIT i was merely offering an alternative view. I train in volume the majority of the time but i have used and do still use HIT to change up workouts every so often. Both are effective when used right, for me anyway but everyone is different. its just personal preference and perspective.