We want to have the list of all contacts that are attached to an account with a specific type of opportunity in SFDC?
The filter "Has opportunity" does not work since concerns only the contact roles (people involved in the opp).
Is the new filter "covered by opportunity" better for our need?
Have you already used it?
If you can't use Contact Roles, you need an Account or Contact level field identifying an opp.
Has Opp filter has Record Type or Opp Type filter (or you can add it in SFDC).