With a general direction in mind, Leonard Ethan was able to work more effectively in London, such as searching for information that seemed unrelated to the whole affair at first glance.
By comparing these pieces of information with his memories, Leonard Ethan found that the situation of the exploratory team in this world was not much different from the one in the other world.
This means that the differences between the two worlds in terms of the location of the ruins are likely not significant, so finding the target becomes exponentially easier.
In order to verify this information, Leonard Ethan spent two weeks researching, then brought the materials that still needed further examination to Cove Port in Western Ireland.
In addition to gathering information, during this time Leonard also conducted tests and training related to Arctic exploration with the rest of the team, mainly focusing on Mr. Scott and Joan.