Why in many places maa kali and maa shetla are worshipped with Muslim pirs?

Just found this out. In many parts of Bengal Muslim pirs like Sayed are worshipped alongside maa kali as her "servants" or "companions". Same seen is up in punjab with maa shetla Devi being worshipped with pirs in dargha and temples. Usually in all these places pirs are given a lower rank to the actual deity. While I don't know how all this happened but what I do know is...these seems to have merged well honestly. I have heard enough Stories and personal tales about the pirs helping the devotees of Kali in there personal and spiritual issues. Unlike in normal circumstances in which energies of two different faiths usually clash here they seem to have become one... Many Sufi saints even seem to hold respect for maa shetla and kali in the respective towns where these temples/ darghas are located. Also on a side note in many places these pirs have become side companions of kul devtas or the entities under them have become kul devta/ pariwar Devta themselves. I think regarding these you can have them removed if you wish.... But can one now have these removed from maa shetla or maa kali's influence without retaliation from both the pir and deity? Because I think the pirs have taken the role of gana of these two..doing anything with the Gana of any deity is just asking to be bitten by a poisonous snake. But if that's the case then how does all this work and function? Pirs are still loyal to allah and there faith but they work under kali at the same time. How can this arrangement work?