Do the cabal guardians hear the protective (like chant of resilience and anthem of resistance) songs and the healing songs of bards who are members of said cabal the same way opposing cabals hear the maladicting and offensive songs?

I remember being unsure of this and when someone asked me earlier I couldn't give them a definitive answer.

>Do the cabal guardians hear the protective (like chant of
>resilience and anthem of resistance) songs and the healing
>songs of bards who are members of said cabal

Yup. They're treated exactly as ungrouped cabal members would be. (In most cases I think this means full beneficial effect, but it's possible that some songs favor actual groupmates.)