Naturally Stealthy: You can attempt to hide even when you are obscured only by a creature that is at least one size larger than you (PHB 28).
I haven’t been able to find a game definition for obscured (or concealed) in either the PHB or DMG. The closest I’ve come is the rules for cover, which indicates a “target can benefit from cover only when an attack or other effect originates on the opposite side of the cover” (PHB 196).
How far away from a creature can a Halfling be and still be considered obscured by the “cover” provided by another creature? Adjacent? Within 10’, 30’, 100’? No limit?
Would the Halfling be obscured only from creatures on the direct opposite side of the obscuring creature? Any creature on the generally opposite side? Only when a line of sight traced between the Halfling and a creature passes through opposite sides of an obscuring creature’s space?
I can establish my own definitions for this ability, but I want to make sure there are no indications relating to this issue in the RAW before I do. Thanks.