Personally, I would just list them together with the additional details in the activities section. From applying this cycle, I've realized that adcoms don't seem to care as long as you convey your message clearly. I actually abused the purpose of the "most meaningful experience" section somewhat for one of my activities by specifying one of my activities as published papers and listing additional publications under most meaningful (instead of describing the experience). I still received four T10 interviews and acceptance. Bottom line is, I don't think it'd matter too much either way.
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