A recruiter coffee chat is usually more useful for process, timing, office hiring needs, role eligibility, and how the application is evaluated. A consultant is usually better for day-to-day work, team culture, projects, and personal experience.

Prepare questions that match what the recruiter can uniquely answer. You can also use the conversation to clarify your own recruiting situation and any timeline questions.

Two or three process-specific questions plus a clear introduction are enough. Do not force consultant-style project questions onto a recruiter. If useful, this guide on consulting coffee-chat questions gives more detail.

recruiter chat = process questions. consultant chat = actual job questions imo.