You can ask for an assessment extension, but whether it is granted depends on the firm's process and reason.

Recruiting teams may handle genuine conflicts, illness or accessibility accommodations differently from ordinary scheduling preferences.

If a work deadline overlaps the invitation window, contacting recruiting early is more useful than letting the link expire. Expect to organize information and reason under time pressure rather than rely on memorized chatbot responses.

Contact recruiting before the deadline, explain the scheduling conflict briefly and propose a specific alternative. Until they confirm a change in writing, continue planning around the original test window.

A client trip landed exactly during my test window.