I can never recover that fast from a workout with that many compounds in one day, then repeated 48 hours later. If I train to failure on two deep sets of squats or incline DB press, no way is that muscle recovered 2 days later. However, i am old.
Rob, I am the same age as you.
It's HST so I never train to failure on it. No point because HST is all about frequency not failure. so M, W, F, Weekend=rest, etc...
If I trained to failure it WOULD be a problem for sure but in my experience training to failure is useful only sometimes at best and not the way forward, but that is just me.