In an area covered with ball bearings and caltrops, a character is moving at full speed. She is, then, required to make a save against ball bearings and again caltrops. It does matter, because:
- If caltrops save is first, and fails, it makes character stop moving and conditions no longer force ball bearings save.
- If ball bearings save is first, and fails, it may give disadvantage to caltrops save (this is a topic of question linked, not this one).
As you see, there may be a situation where at least two saves are required, but no "natural" indication which one is made first. Is there a general rule about saving throws order? If there is, please use example above as example how to apply it.