I have marked Can you Contingency a spell from a Ring of Spell Storing? as a duplicate of Can Contingency be used with a spell cast from an Ioun Stone?, but there was some disagreement in chat as to the validity of that decision.
The main reason for my closure is that the wording of the two magic items at the heart (as I perceive it) of the questions (Ring of Spell Storing and Reserve Ioun Stone) have virtually identical wording. This, in my mind, makes the questions mechanically identical. However, they are still different items in name which makes them technically different questions and not exactly the same question.
So, in my never-ending quest to understand the way that we use duplicate closure as a tool I pose the question to you all.
Should these questions be marked as duplicates?
(Given the direction this seems to be going I have reopened the Question. Better to have a duplicate be answered and active and close it later than to unjustly close a question that shouldn't be.)