Can a human be swallowed hull by another human and still be alive in their stomach?

No, a human cannot be swallowed whole by another human and survive inside their stomach. Human anatomy and physiology do not support such an act; the stomach is an acidic environment designed to digest food, and there is no space or means for a person to remain alive inside another's stomach. Additionally, the act of swallowing a whole human would be physically impossible due to size and structural limitations.