I am doing an interview for a Research Engineer position in a startup. I have already passed a phase that implied a long test and two coding projects rather time consuming.
Now I have been sent an email saying I pass to the next round which consists in doing another even longer programming project.
I am very tempted to ask in which phase of the interview process I am, since my efforts will vary depending on. For example if it is stage 3/7 and there are another 200 candidates on this phase I can infer that they were not very selective with my previous submissions, a situation very different to the case it was the final stage before the in-place interview.
Is it an impolite question?