What questions should I be asking oncologists/surgical urologists?

I have an appointment at Duke and with a local oncologist this week to get a treatment plan for noninvasive papillary urothelial carcinoma on left ureter, plus renal scan shows a non functioning left kidney. Last week local surgeon says I am not a candidate for chemo due to stage 3b ckd and should try remove kidney first and then do immunotherapy. My nephrologist seemed surprised that he opted for no chemo. Please share your experiences.