A first rejection can feel complete because there are few earlier endings to compare it with.

Perspective is built out of repetition, and at the start there has not been any. Without other endings to set beside it, a first refusal fills the whole frame and appears to describe your entire future rather than one decision by one set of people on one day. The feeling is not an overreaction. It is simply what a single ending looks like from the inside.

If you are near someone going through this, resist saying it will not matter later, which is true and useless. Ask about it instead, and stay. Comparisons arrive with time, and until they do, the company matters more than the perspective.