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  • If I understand what you war doing then you do not need the third relationship. You only need:

    Universities <=> Faculties
    Faculties <=> Programs

    if you want to get Universities from programs you get the faculties relationship and then get the Universities relationship form the faculties posts

    if you want to get the programs for universities then you get the faculties and then get the programs for each faculties.

    If you really want to have it circular then you need to have 3 relationship fields and each post type will need to have 2 fields where you select the other 2 post types separately.