From the rules I gather that Delayed Triggered Abilities are objects on the stack,
112.1b. An ability can be an activated or triggered ability on the stack. This kind of ability is an object. (See section 6, “Spells, Abilities, and Effects.”)
but because these delayed triggered abilities need not trigger until their trigger condition is met, it stands to reason that they remain on the stack until they can resolve. However, this seems to be in conflict with the continuation of the game after a player receives priority, which happens as soon as all players pass on priority and the stack is empty:
116.4. If all players pass in succession (that is, if all players pass without taking any actions in between passing), the spell or ability on top of the stack resolves or, if the stack is empty, the phase or step ends.
...
500.2. A phase or step in which players receive priority ends when the stack is empty and all players pass in succession.
So then, my question is: where do Delayed Triggered Abilities live, and if the answer is indeed 'on the stack', what is the resolution to the apparent conflict with continuing the game?