What happens next. We read it ourselves and reply with two or three times that fit what you said. Usually same day, always within one business day.
If we are not a fit we say so on the first reply, not on a call booked to say it.
What happens next. The time is held the moment you press the button. You get a calendar invite with a Google Meet link, plus a note about what to bring.
If we are not a fit we say so before the call, not in the half hour.