It's not as simple as it seeems though is it?
Leaving a huge BIR sized pot overnight will, because of its inherently greater heat capacity, continue to cook for longer than a typical three or four litre base made at home. I think you'd need to compensate in the home cooked version by cooking for longer than typically done at the BIR.
Mr Singh's base as quoted in this thread is cooked for four hours but I wonder how long it is actually cooked for at the takeaway and for how long it is rested - was Alex smart enough to take that into account I wonder?
Didn't you experiment some years back haldi cooking bases for at least six hours, perhaps even longer?