[@Norschtalen]
To be hiding at that time (effectively at least) would have required slowing down. As the party was hurrying along, that would have been a tough thing to do. However, it might still have been possible. Please roll for stealth at disadvantage, if you seek to do so. Once we move into combat, Hide action is available as per usual, without said drawback too. If the character's location is appropriate for hiding, of course.