Let's assign variables for clarity:

Let Katy's salary $=K$

Chase's salary $=0.8 K$

Timan's salary $\(=0.8 \times 0.8 K=0.64 K\)$

- Quantity A: Katy's salary $=K$

- Quantity B: Timan's salary $=0.64 K$

Since $\(K>0.64 K\)$, Katy's salary is greater than Timan's salary.

Conclusion:
Quantity A is greater than Quantity B .