Based on your short description of the context, both examples are fine. However, the real question is: in which of those contexts did you encounter interpersonally challenging situations in a team setting, to explain your detailed "Actions" and "Decision-making rationale" (according to the PARADE framework) in those situation. The context as such is actually secondary.
Additional comment: As a rule of thumb, the more current your example is, the better - all other factory being equal, chose the more recent example.
(Why? Firstly, as an interviewer, I am interested in your current skillset and abilities. Therefore, I am not really so much interested in your actions and decision-making rationale several years ago as opposed to several weeks or months ago. And hopefully, you developed yourself further over the last couple of years, so that your actions and decision-making rationale were different today, given the possibility that you would be in the same situation again.)
Hope that helps!