I don’t Consider This is certainly accurate. It only doubles the length of 1m+ spells, to some greatest of 24 hours. Implying that any spell using a period >12hrs would not be doubled, but rather capped at 24 hrs. But a 1m spell only results in being a 2m spell, https://dungeons-and-dragons-pala45566.ourcodeblog.com/18605559/dnd-multiclassing-no-further-a-mystery