There are circumstances in which it is not immoral to make certain threats, and there are circumstances in which it is not immoral to ask for money or some other favor
Ttherefore, there are circumstances in which it is not immoral to ask for money or a favor while making a threat
It is healthful to take drug A for a headache, and it is healthful to take drug B for a headache; ttherefore, it is healthful to take drug A together with drug B for a headache.