These two questions aren't duplicates. Even going by the rule of thumb of "if two questions have the same answer, they're duplicates", they're not duplicates. It only appears that way at first glance because of the lengthy citation which explains both situations.
In reality, though, the answers are more like this:
- Yes, you use the stack. Here's the lengthy process involved if it makes things clearer.
- You resolve that ability before blockers. Here's the lengthy process involved from another answer.
The answers are more than the citation of that process. The answers to one are not appropriate for the other. The process itself, appearing in both answers, is not in itself a decent answer to the question - clearly both answerers felt that way, since they both added explanation and a direct response to the question at the beginning of their posts.
Just because the answer to one question can be found somewhere in the answer to a completely different question does not mean the questions are duplicates.