Question How to ask Unity employees question? Cant get a reply

Hi,
I have a question about gpu instancing that I would like to clarify with someone knowledgable, ideally a Unity employee. Cant seem to get a response on the forum? Here is is posted again below:

I would like to know whether GPU instancing and the performance benefits it incurs still apply when using multiple render passes. For example, I want to use material property blocks to draw objects differently in a custom render pass, RATHER than using a material override. Then I will store the custom render pass color target to a temporary render texture. Does this require the scene to be rendered twice, or does using a single material (albeit with different property block values applied) in each render pass allow instancing to occur across multiple render passes?

Please let me know if I can better clarify.

Thanks!