It could well be and its definitely something I aim to find out. Perhaps they use the Tandoor to precook certain meats. The Tandoor for certain, was not fired up when I visited for the Bhaji demo and by the time the other cooking processes had started, the pilau rice process especially, the aroma's had all but engulfed the smoky aroma.
I have also taken a mental note of when certain processes are being done as well. They only have a small kitchen and with 3 or 4 people in their, you have to be polite.

So perhaps different processes are done on different days for this reason. For instance, they make base (garabi as they call it) Monday and Saturday, the Onion Bhaji demo I had was on Thursday and the Pilau rice was being prepared too. Which produced some very interesting aroma's along its way.