Intreview for AOS/ I-485 Based on Eb2/NIW or EB1A?

I am a researcher/ medical scientist.

I-485 filed on April 2026..

I have an interview in the Field ofiice of Chicago. I have not expect to have an intreview..1
is it a good or bad sign?

Have you recieved such intreview recently? and please share your experience and any advice...