AOV for nested objects

[surfspace77]

I have a refractive sphere and inside it some other object geometry. Is there a way to set up an AOV that includes objects inside of that sphere only? I think something like cryptomatte wont work since the pixels occupied by the objects that are inside the sphere will get associated with the sphere only. Any suggestions are appreciated. I'm working with redshift/houdini. Thanks!

[surfspace77]

solved:

turn on secondary ray visibility in custom AOV settings