Most exhaustion can be removed by a long rest, food, and drink (PHB 251)
Finishing a long rest reduces a creature's exhaustion level by 1, provided that creature has also ingested some food and drink.
Exhaustion caused by dashing while in a chase, however, is removed by a short OR long rest, with nothing else required. (DMG 252)
A creature can remove the levels of exhaustion it gained during the chase by finishing a short or long rest.
I understand that a short rest alone can remove chase exhaustion.
What I don't understand is whether one rest removes multiple levels of exhaustion or just one. That is, is the second quote above more explicitly written as:
- A creature can remove ALL the LEVELS of exhaustion it gained during the chase by finishing a SINGLE short or long rest.
- A creature can remove ONE of the LEVELS of exhaustion it gained during the chase for EACH short or long rest that it finishes.