Role of Cash: Nesco vs Nirlon

In lecture 27 of BFBV V12 , Prof. Bakshi had mentioned a point of "Role of Cash: Nesco vs Nirlon". Now, I don't know what he had discussed with his class, but since I had studied these 2 companies, I am venturing a guess on what the Prof. may have discussed in class on this point. This is not a recommendation to buy or sell either. This is purely an exercise for academic purposes.