Historian Kelly DeVries has moreover proposed that Harald may have wanted to test the situation in England before a possible invasion, only to find that he could not be at war with Denmark and England at the same time.
歷史學家凱利·德弗里斯（英语：Kelly DeVries）還提出，哈拉爾三世可能想在可能的入侵之前了解一下英格蘭的狀況，但卻發現他不能同時與丹麥和英格蘭交戰。