Indirect and inverse relationships are not the same. Indirect relationships are where one person provides a service to another without the second person knowing the details. An example of this might be a doctor who delivers babies without knowing the mother’s address or phone number.
Inverse relationships, on the other hand, are where two people know each other well enough that one can provide information to the other. An example of this might be a husband who knows his wife’s daily schedule and can predict when she’ll need a break from work.