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It is possible to separate the reflected background , for example having 2 glossy objects A and B and a hdri image as background to reflect. I want to have a blurred version of the hdri reflected on object A and a crisper version(or diferent hue) reflected on object B. I am aware that using the light path node and substracting glossy and singular ray it is possible to split the reflection one object having the sharp Bsdf , but i need two glossy objects with roughness non zero each . thank you

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Starting with two objects with the same glossy material.

Give the objects different Pass Index.

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Enable Object Index in the render layer

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In the compsitor use an Id Mask node and select the pass index of your object and use that to mix the blurred image with the non blurred one:

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